Overwintering Potted Roses in the Garage

I contend that, if you want to learn anything about winter-protecting roses anywhere in the world, ask someone in Minnesota.  Historically, Minnesotans have experienced some of the harshest winters in the lower 48 states and that has given rise to the most unique ideas of winter rose protection you will find anywhere (witness the "Minnesota Tip").  I always chuckle when I read nationally published articles about winter protecting roses in zones 6 or 7, earnestly describing their "harsh" winters.  I grew up in zone 6 (Detroit) and all we ever did was rake leaves around our hybrid teas, with never a winter-kill problem.  Obviously not so in Minnesota, despite the fact that our winters have gotten significantly warmer in the last ten years or so. We're feeling a lot more like zone 5 than zone 4 these days.  (See my blog post: Climate Change in the Rose Garden:
 http://jack-rosarian.blogspot.com/2012/06/climate-change-in-rose-garden.html  ).

The members of the Twin Cities Rose Club (TCRC) are a bunch of smart northern gardeners and some of the best rose-growing ideas get published in the TCRC Newsletter, month-to-month.  A recent article by my friend Chris Poppe really caught my eye and I asked her if she would let me pass along her excellent article "Over-wintering Roses in the Garage" to the readers of the Minnesota Rose Gardener blog.  She enthusiastically agreed, so here we go.  Chris is a recently retired teacher from the Minneapolis Public School System; a smart lady with a beautiful rose garden on a small lot in Minneapolis (hey, she even grows broccoli alongside her roses)!  She's also the program chair of the TCRC.

Here's her article, along with some very good "how-to" pictures:

Over-wintering Roses in the Garage

 

by Chris Poppe

 

Every year, as I pile potted rose bushes (sans the pots) into the trench where I bury my tree roses, I wish that I could just leave some of them in their pots for the winter and save myself a lot of work.  But, that would only mean that I’d have a lot of dead, potted roses come Springtime.  So, I dig and bury until they’re all covered. 

Then, last year I went to the open garden offered by John and Char Turek at their farm in Chaska.  John has over 300 rose bushes in his garden - about 90% of them grown in pots.  Every Fall, John gives them all a good watering, cuts them way back and moves them to an insulated, but unheated, part of his barn, where they rest for the winter and emerge to grow and bloom another year.  Some of John’s roses are 5-10 years old and have lived in pots all their lives. 

That got me thinking.  Where and how can I replicate John’s storage area?  Living in the city, I have no barn, but I do have an unheated but sort-of- insulated garage.  Hmmm.   It’s a double garage and I have only one car, but it’s also the winter home of all my outdoor furniture (tables, chairs, glider, settee, etc), garden decorations, potting bench, lawn mower, wheel barrow, bicycle, etc. etc. etc.  Along the East side and into the SE corner, I have an old wooden picnic table which serves as a storage area for a lot of the folding furniture.                                                                             

I decided to build my winter rose shelter in that SE corner, so I shoved the picnic table about 3 feet to the North and lined the back and floor of the space with foil-faced, roll insulation.  I wedged a piece of 1” foam insulation into the space along the back wall of the garage, put another piece of foil insulation on the opposite “wall” and put a second piece of foam on the floor on top of the foil, so the pots would be separated from the floor.

The picture below shows the the start of the enclosure-building, with foil on the back wall and extending across the floor, a piece of foam insulation on the right wall and, although you can't see it, another piece of foam on the floor under the foil insulation.




Below is the enclosure as it was being constructed. The curved piece of foil will become the left side wall of the enclosure.
 

 

After watering the pots and cutting the canes back to about 10 inches, I wrapped  foil around each pot and made a small “hat” to put over the canes. Below is one of the pots ready to be put into the enclosure. The pot itself is wrapped in foil and I made a little cap of taped-together foil to cover the canes themselves.

 I pushed the pots into their insulated box, packing them together as tightly as possible. Then, I put another long piece of foil over the top of the space, tucking and taping it into place.   

                                          
When Spring came, I opened my  storage area to find that all four Hybrid Tea roses were already beginning to leaf out!

I then moved the pots out into the garden. Here is the wintered-over rose bush enjoying its first sunshine in more than five months

My "wintered-over" plants have grown and bloomed all summer.  Below is "Love's Kiss" in full bloom in mid May.

This fall, I’m going to try to winter over several more.  Give it a try in your storage shed or garage. This might lead you to a whole new program for growing roses!   

                                                                                            Chris Poppe

Editor's note:  Chris doesn't mention that one of the important things she is doing by enclosing her potted roses in foil insulation packages is not only to keep them insulated, but also to keep them in complete darkness throughout their dormant period.  Also, she mentions watering them before enclosing them.  I have read that watering the plants, but not soaking them, is the right way, which I'm sure is what she did.  At some point, perhaps half way through the dormant period, you can open them a bit and add a little more moisture, so they don't completely dry out.

I have used a similar, though less sophisticated, method, putting my pots on the wood floor of my trailer (i.e. off the concrete floor of the garage) and covering the whole trailer with a canvas top.  My garage is insulated and heated, so I am able keep them right at, or just above, the freezing point.  Another TCRC member, Millie Hisey, just puts her potted roses in the back of her pickup truck (which has a camper top), puts the truck in the garage, and goes to Arizona for the winter.  So there are several ways of doing this, but I think Chris' method is the slickest I've seen.

I'm sure Chris will be glad to take your questions.  Simply leave a comment/question at the bottom of the blog page, and I will pass it along to Chris.




 

Follow-up on Potassium Feast and Air Layering

Here are a few pictures showing current results of my previous posts on the Fall Potassium Feast and Propagating Roses by Air Layering.

As I mentioned in my article: Potassium - A Special K-Ration Feast For Your Roses:
http://jack-rosarian.blogspot.com/2012/08/potassium-special-k-ration-feast-for.html , after a few weekly applications of liquid potassium, the canes and stems of the plants start turning red, as they harden off on their way to dormancy.  I made my third application (of six) yesterday and here are a couple of pictures showing how my roses (Earth Song) look at the half-way point in the process:

Note how red the stems are becoming, as the potassium moves into the plants; also note the edges of the leaves and the vivid color of the flowers.  After the final three applications, this becomes even more noticeable.  I think it's quite beautiful.

Second, here is an update on the status of my air-layered maidens pictured in my article: Propagating Roses by Air Layering: http://jack-rosarian.blogspot.com/2012/08/potassium-special-k-ration-feast-for.html .

As you can see, they have grown quite a bit in the last couple of weeks.  They are sunbathing for a couple of hours this afternoon, from their usual spot in a shaded cold-frame on the north side of my house.

Roses and Deer

I live on the edge of a wetland in Edina, Minnesota, a suburb of Minneapolis.  The back of my property, behind my garden and pond, is in the watershed of Nine Mile Creek, which, true to its name, runs for nine miles until it reaches the Minnesota River Valley, which ultimately joins the Mississippi, several miles further along.  To say that we have wildlife in our area is an understatement.  I am never surprised with what comes through my yard and garden.  I don't just see an occasional deer; I see herds of them!  We also see coyote and two of my neighbors encountered a cougar a couple of years ago.  No bears yet, but I wouldn't be at all surprised if one showed up in my rose garden.

So here's what I saw yesterday afternoon, in broad daylight:

This young buck is eating my Morden Centennials with the sun shining on his flank!  He's not supposed to be around at that time of day!  So what gives?

As you can see, I got pretty close to him with my iPhone and he didn't even look up until I got a little closer:

The look says it all.   "Yes, what can I do for you?  I'm eating my lunch"!  Note the two antler buds on his  head.  He's a two pointer!

So... I tried to get a little closer yet and this is what happened:

He jumped over the garden wall and took off into the wetland with his family; there were actually three of them watching all of this!  Don't be fooled by that nicely mowed lawn; it turns into a creek when we get a good rainfall.  The deer are really in their natural element.

So, how do I grow roses in this environment?  It would normally be a very big challenge; perhaps impossible without extraordinary measures.  But actually I really have their number, because they have a big weakness: They love peanut butter more than they do roses! 

And that is the fundamental idea behind the "Minnesota Deer Trick".  It consists of a modular electric fence powered by a standard livestock fence-controller and a 12-volt battery.  On that fence I hang strips of aluminum foil smeared with peanut butter.  The fence alone will not deter the deer.  I have seen them jump over it or crawl under it when it's not turned on (like yesterday afternoon).  However, they can't resist a lick of the peanut butter bait on the electrified aluminum strips, when the fence is up and running.  Because the fence is only connected up, electrified and baited from dusk to dawn (their usual time for garden foraging), I hardly ever see them make contact, but I know they do because I have no deer damage, as long as the fence is baited and turned on every evening.  I only saw it happen once in the very early morning, several years ago, and I have never seen a deer jump so high or run so fast.

Deer are xenophobic.  Once they have experienced a shock on their tongue or nose they go away and stay away.  However, this has to happen to every deer in every herd that passes through my yard and that means I have to be consistent about putting up and baiting the fence every night.  Yesterday afternoon when I took the pictures above, I immediately realized that I had a new group of deer in my garden, because those that have been shocked don't come back, as long as I am consistent with the fence.  They're still around in large numbers, but they give my garden a wide berth as they forage in my neighbors' yards.  So, last night I freshened up my peanut butter strips and turned on the fence a little bit early, because I knew they would be back.  The result?  No further damage last night, as expected.  However, I did find a pile of deer excrement very close to one of the electrified peanut butter baits.  Guess it scared the "you know what" out of that little two-pointer!

I'll write another blog soon, detailing a "how to" for the "Minnesota Deer Trick", including where to get an electric fence controller (farm store) and how my fence is constructed (modularly to make it easy to put up and take down).

Bottom line:  The "Minnesota Deer Trick" works. 

As always, let me know if you have any questions or observations.  Send an e-mail to
jfalkersr@gmail.com.

Propagating Roses by Air Layering- North Central ARS Convention



Hello everyone!  On Saturday, September 15th, I had the opportunity to make a presentation to the North Central Convention of the American Rose Society on rose propagation, specifically the process of air layering, which is a fascinating, 4,000 year old Chinese technique.  The slides that follow are self-explanatory, but I'll insert a few comments to give you the flavor of the presentation, as we go along.  The blog site doesn't lend itself well to importing PowerPoint presentations, so please excuse the slight blurriness of the slides, which I believe are pretty readable, though not perfect.

I will also append two articles at the end of the slides: one on air layering, from which I learned the technique, and the second on rooting stem cuttings by Mel Hulse, a legendary rosarian, who recently passed away.  Both of these articles originally appeared on the ARS website, but they are no longer available there.

Finally, please ask me questions, because I want to help you in any way I can.  My e-mail address is:

jack@falkerinvestments.com.  I hope you will have as much fun propagating roses as I have, over the years.  It's one of my favorite things to do in the garden.

These are pictures of my garden in Edina, Minnesota, an inner-ring suburb of Minneapolis.  Above, is my Buck "Earth Song" bed, composed entirely of roses that I have propagated.  Below is the same bed from a different perspective, with my pond and Morden Centennial bed in the background.

Above are Buck "Prairie Harvest", "Morden Blush" and "Winnipeg Parks", most of which I have propagated.  Below is my "Earth Song" bed again, on the morning of my presentation, which I couldn't resist including

This is my friend, Dick Lawson doing his first air layer this summer on a very sweaty, 95 degree day in Minnesota.  Thanks to Dick and Diane Lawson for these pictures of their beautiful garden.

In the picture above, Dick is scraping off the green phloem tissue to get down to white wood.  If you don't do this, roots will not form.  However, the biggest mistake you can make in removing the bark and scraping the green tissue off is cutting too deeply into the cane you are working on.  That will cause the cane to eventually break and ruin your work.  I have made this mistake several times and is really the only problem I've had in producing healthy, new plants by air layering.

Note that as long as the cane above your air layer is healthy and growing, your air layer is successful and should produce roots in a few weeks.

Above, you can see roots forming after about 3 or 4 weeks.  This is the point at which I do a little fertilizing by inserting a hypodermic needle with weak liquid fertilizeer to give the new plant a  boost.  Below, you see the results.  This is my favorite picture in the presentation.  Look at that root system!

Below is an air layer that Dick opened up prematurely to see what was going on.  This is very interesting because you can see the callous from which the new roots form.  Dick says he closed this one back up and the growth above continued to look good, so perhaps he will get a new plant after all.

Above and below are three new plants inside my cold-frame, where they will stay until the weather gets too cold for them to be outside, at which time they will come inside under the lights for the rest of the winter.

Above and below are two of the plants showing new growth, after being in their pots for about two weeks.  Note that they have been cut back to about six or eight inches, leaving several leaf nodes from which the new growth starts.  Also note that the plants have been stripped of all leaves to clear the way for new growth and reduce overhead for the new roots to support.  It's been a week since these pictures have been taken and both of these plants show significantly more growth today.

Below is the light stand in my basement, where the new plants live during the winter.  The stand uses ten 100-watt compact fluorescent bulbs, giving me 1,000 watts of light, while drawing only about 200 watts of power.  The bulbs are mounted in five dual sockets on an old shop light that I gutted and rewired.  I use a mix of high frequency (cool) and low frequency (warm) bulbs to give me a broad spectrum of light.  The plants are bottom-watered with a light fertilizer mixture and really grow well in this environment, such that they prolifically bloom and have to be cut back as the winter progresses.  My biggest problem is latent spider mites that are very hard to completely eliminate.  I wash the mites off every four days in the laundry room sink but they keep coming back if I let the washing go too long.  I don't spray any miticides or insecticides indoors.  The other problem I have, though not as pervasive as mites, is white flies.  They can be controlled by soaking some kitty litter (the paper variety) in Merit (imidacloprid) and putting it on the plants as mulch.

Here are the ARS propagation articles on Air Layering and Stem Cuttings.  Unfortunately, the pictures accompanying these articles did not copy to the blog site.  If you would like an e-mail copy of the articles, with the pictures, send me an e-mail: jack@falkerinvestments.com and I'll send them to you.

Propagating Roses by Air-Layering

by Leonora Tsukayama
East Hawaii Rose Society

ROSE PLANTS WITH ROOTS IN 21 DAYS! It's possible if done correctly and conditions (plant health, growth pattern and weather) are right. It happens in my own back yard and within months I am admiring blooms from my new plant. The method is called air-layering. About 4000 years ago the Chinese people used it to duplicate plants that were difficult to root by cuttings. It is similar to the old layering method of bending a lower flexible branch to the ground, then placing a heavy rock on the branch and waiting for a long time to see the roots grow. There is no trauma to the mother plant; in fact, it will promote growth as if you pruned that branch. Healthy new shoots will sprout below the air-layer.

My mom taught me this technique many years ago when there were no garden centers to buy plants and supplies. She would drive up to the forest and pick her own sphagnum moss and would then air-layer the plants of her friends. Some of these plants were the lychee, lemon, pikaki, evergreens, roses and a lot more. After a couple months she would come home with a gleam in her eyes and a new plant in her hands.

HOW DOES IT WORK?
The leaves make nutrients from the sun and send it down the phloem tissue (a greenish substance located just under the bark) to the roots. When this "pipeline" is cut and kept moist the nutrients will collect at that point and in ten days form a callus from which the roots will develop. The air-layered part will still receive its water and nutrients from the roots through the xylem tissue located inside the woody part of the stem.

Some advantages of air-layering are higher percentage of success, a jump-start in plant growth by at least two years, stronger root system, very low cost, no "baby sitting" cuttings, and you get personal satisfaction when you see the fast results.

SUPPLIES:

- Sphagnum moss or Jiffy Peat Pellet (soaked in water)
- Sharp knife
- Rootone (liquid or powder)
- A small brush
- Clear plastic sheet (6" x 10") or sandwich bag (cut open)
- Twist-ties
- Plant labels

PROCEDURE: Choose a green, pencil-size stem and make a safe area to work in by removing thorns, leaves, and branches.
About 1/4" below a leaf node, make a cut around the stem and 1" below that make another cut. Then remove the bark between the two cuts.
With the knife blade, scrape the wood, making sure the bark and the green tissue is completely removed or it may not develop roots.
Brush on Rootone
Wrap with the clear plastic sheet making small pleats as you go around the stem, forming a sack. Then 5/8" below the cut area, snugly twist-tie it. (Not too tight in order to allow the plant to expand). Pull the plastic sheet down to expose the site. This makes it easier to place the moss around the cut. Squeeze out water from a handful of moss or a Jiffy Peat Pellet pot until just moist. Form a wad about the size of your palm or make a vertical tear down the Jiffy Pot.
Wrap moss or Jiffy Pot 3/4" above and below the bare stem. Pull up the plastic and straighten, making sure it is air and water-tight. Secure top with the twist-tie (Not too tight in order to allow the plant to expand). Label your plant as desired (plant name, color, type, date, etc.)
Periodically examine the layer. Most rose plants show their white roots beneath the plastic sheet after 21 days, some may take longer.

PLANTING: The roots will show through the plastic sheet. When they are about an inch long (about 21 to 28 days), clip the stem off below the layer. Soak in water if you are not ready to plant, but no longer than three days. Gently remove ties and plastic. Carefully loosen moss or tear some of the netting from the Jiffy Pot. Trim off all the leaves and young shoots, then cut off side branches till the plant is about 10" tall. Plant your new air-layered rose. OBSERVATIONS AND TIPS: Healthy mothers make healthy babies. Pamper the mother plant with extra liquid fertilizer and water two weeks before this procedure to insure vigorous growth. It is harder to peel the bark off during the dry season. It's a good idea to make sure that the mother plant is well hydrated. We must respect our hard working hybridizers who spend many years developing new rose plants. Patented roses should not be cloned. Stems that are green but not tender develop roots faster than brown older ones. Add a couple drops of household bleach and 1/4 teaspoon of liquid fertilizer to the water before soaking the moss. Bleach kills bacteria and fertilizer promotes growth for the new plant. Potting soil can be used as a growing medium, but I find it hard to fill the plastic sack. Disinfecting your knife with alcohol or hydrogen peroxide is good, but be sure to rinse with clean water before using it on your next plant. Using a foil or a dark cloth as a cover will promote root growth and prevent the tender young roots from burning in the hot sun. However, I don't like it because it makes a great hiding place for lizards. If you notice the layered part starting to wilt, remove by cutting it off below the clear plastic sack and check to see if there's a callus. If so, soak in water until it hydrates, then plant it. Sometimes it may grow. HAPPY PROPAGATING!

Rooting Roses - A Rose Rustler's Toolkit Rosarian Contact: Mel Hulse - Volunteer Maintenance Director of the San Jose Heritage Rose Garden, San Jose, CA (This article has been widely circulated on the Internet; the most recent version has been improved with the inclusion of Paul Barden's photos.) Here is that article, complete with the pictures: http://www.paulbardenroses.com/hulse.html Rose rustling is great fun! Whether admired in a bouquet, a friend's garden, or found on a Sunday drive, knowing that you can clone the rose that takes your fancy expands your love of your rose growing hobby. Hardwood rooting is a classic amateur method of propagation, but is available only in the winter when you can't see most roses bloom. Bud grafting requires ready root stock and is mostly suited to professionals and experienced amateurs. Softwood rooting is available when you see the rose blooming. I have had the good fortune in turning softwood cuttings into growing bushes planted the San Jose Heritage Rose Garden and others. I've started 1,000s of cuttings with near 100% success when cuttings meet the specs I'm giving you and good success with less select cuttings. Remember that all roses started out as seedlings on their own roots so grafting is not essential to their growth. Old Garden Roses, English Roses, Shrubs, and Miniatures are generally good candidates for rooting cuttings because most grow vigorously on their own roots. Most modern roses such as Hybrid Teas and Floribundas are sold budded onto rootstock. Most newer ones grow well on their own roots; a few do not. A small number of old varieties, such as Spinosissimas and some other roses with dense prickles as well as a few modern roses, are difficult to propagate and may take many tries to gain success. Please remember that asexual reproduction of roses still under patent protection (now 20 years) is illegal, especially if for sale. This technique stresses three goals - simplicity, successful rooting of your softwood cuttings, and ease of transfer of the rooted cutting to your garden. EQUIPMENT AND SUPPLIES: * A very bright interior window ledge or table in front of the window with no direct sun. I am having success outside under a covered, shaded deck in our warmer climate (overnight temperature above 45 degrees). * One gallon ZipLock type storage bag(s). * Bypass shears. * A very sharp pocket, paring, or budding knife, preferably carbon steel. * 1 gallon or more container of water. * Potting soil. For bags, you want a mixture that holds together well when damp. Ingredients should be of fairly fine texture. In the West, Supersoil works well. Shultz Potting Soil with Fertilizer from Walmart And Whitney Farms Seed Starting Mix work also. * Spray bottle of about 16 oz. capacity. Put in 1/8 teaspoon Miracle Gro for Roses, K-Mart's cheaper clone or Peter's 20-20-20, 1/8 teaspoon baking soda to prevent fungus, and a few drops of dishwashing liquid to make it cling. Fill with water. The mix should suds a little when shaken. If not, add more dishwashing liquid. If you make a gallon, use a teaspoon each of fertilizer and baking soda. * Rooting powder or liquid. Useful, but not essential. I prefer liquid Dip 'n' Grow because I can vary the strength. * A garden marking pen and labels. Home Depot sells a small kit of 40 labels and the right kind of marking pen. * Notebook and pen with waterproof ink. * 10" wooden skewers of the type used for shish ke-bab. * 1-gallon plastic planting pots. You know; those black things! * 14" saucers. Cheap, plastic terracotta color ones from Home Depot work fine. * Patience! SELECTING THE CUTTING: The ideal in order of priority: 1. A stem with a spent flower is desirable. A stem with a flower bud with no color showing is too young. 2. Include four - 5 leaflet leaves on the stem. 5 leaves are acceptable. Fit in the baggie governs the length. Note. For this and the remainder of this article, "5 leaflet leaves" includes varieties that have 7 or more leaflet leaves. 3. A heel at the bottom. This is the place where a branching cane grows out of a main cane. Cut right up against the main cane. Faulting this, cut immediately below the bottom bud. 4. Soft, flexible wood, 1/4" in diameter or less. 5. Disease/virus free. At left: An ideal cutting. For climbers that are sports of a bush form of the same rose, use the end of a climbing cane rather than a lateral even though it has no bloom on the end. Use of a lateral may cause the climber to revert to the bush form. Nature doesn't always give you the ideal and all of the above guidelines can be broken if necessary, but try for the ideal. Keep the cutting damp until ready to use. Wrap loosely with a wet paper towel and put in a plastic bag. Keep cool. Refrigerate, if possible. Use within a week.   PREPARING THE BAG: * Write the rose name or found location and date on a new baggie with the gardening pen. Note all known information about the rose with date in your notebook. If you are more diligent than I, you can keep notes on your cuttings' progress as a reference for future propagation efforts. * Fold the zipper part down a couple of inches to keep the zip groves clean. Put 3 cups of potting mix into the bag. No more. * Pour a scant cup of water into the bag. Grab the bag above the potting soil and knead the water into the soil. While doing this, tuck the bottom corners of the bag under the soil. The mass should look like a ball. When thoroughly mixed, test for enough water. - If water leaks out when the bag is inverted, and squeezed it is too wet. Squeeze out the excess water. - Put the bag top upon a flat surface. Press the top of the soil down to form a 1+" deep, round pancake. Stick a finger into the soil in the middle. If the soil breaks apart, you need to add water and recheck. * Set aside on a flat surface.   PREPARE AND INSERT THE CUTTING: Snip off the stem 1/2" above the top-most 5-leaflet leaf. Strip off the bottom leaves leaving 1 large or 2 regular 5-leaflet leaves. These are required to produce a hormone during rooting and to start growth. If the cutting does not terminate in a heel, locate the lowest bud eye on the cutting--make a cut straight across directly below the lowest bud eye (the "bud eye" is the swelling right above the junction of the leaf with the cane.) Here are several guidelines for unusual cases: * Lateral stems with mature leaves off the main cutting cane. Cut (don't try to break) these off very close to the cane. The bud eye they came from can still produce more breaks. * 'Broken' (opening) lateral buds with immature leaves on the upper part of the cutting. Leave the highest one alone. It will grow. Carefully cut off any others with your shears. * Very small or broken leaves at the top. Leave 3 leaves. Break off the thorns on the bottom inch of the cane being careful not to disturb any minute buds. Note that there are many tiny buds above a heel. Carve a shallow cut through the bark from 1/2 - 3/4" above the bottom of the cutting to the end of the cutting on the opposite side from a bud. Avoid cutting any bud eyes. At right: A typical cutting, about 6 inches long with bottom leaves trimmed off. The cutting will form a whitish callus along this score and along the cut end of the cane. This is where roots emerge. Dip the bottom inch of the cutting in liquid rooting compound or for powdered rooting compound, water and then the compound and knock off any excess. Place the cutting in the hole you made with your finger with the leaves running the same way as the zip grooves at the top of the bag. Press the potting soil around the cutting. It is best if the cane is slanted from one end of the bag toward the other. Be careful in this process to avoid letting thorns puncture a hole in the bag. If this happens, use another bag. Unfold the top of the bag to be ready to close it. Spray the inside generously with the spray bottle you prepared. If any foreign material got on the zip groves, wash it off with the sprayer. Close the bag from both ends toward the middle leaving an inch unclosed. Be sure you do not catch leaflets in the zip grooves. Blow into the bag to expand it like a balloon and zip it up completely. Put the baggie in bright, indirect light preferably inside. Direct sun will scorch and kill the cuttings. At left: Inserting the cutting. From now on, handle the bag only from the top. Set it down only on a hard, flat surface (not your knee.) The idea is minimum displacement of the cane and new roots. Note: While not recommended, it is possible to root 2 or 3 cuttings in a single bag if you are pressed for space. Sorting out roots during potting or later planting will be a potential source for loss. I have found that with 4 or more cuttings some usually die. WATCH IT GROW: Now comes the fun! Roses are very individual and perform differently. New growth may appear in 8 days ('The Fairy') or may take over 3 months ('Belinda' with a hard cane.) Some will form a lot of roots without breaking a bud; some will become tiny bushes in the bag with no visible roots for some time. The presence of leaves does not mean that your cutting has 'struck' (taken). Stored energy in the cutting can support a lot of top growth, but if the cutting doesn't callous and roots don't appear, the cutting will eventually die. Most of the care needed is an occasional bag reinflation. The bag provides the complete humid environment the cuttings need - a mini greenhouse. Don't worry if some of the original leaves turn yellow and drop so long as the cane is green. Remove the dead leaflets (use tweezers) and any mushrooms or fungus. If the soil cracks at the cane, gently move soil into the crack and firm it in place. The skewers are great tools for this. Give the inside of the bag several shots out of your spray bottle before reinflating the bag. Some of these dummies think they should bloom in the bag!!!! Watch carefully for buds and nip them immediately. If you don't, you may lose the rose or set it back months. As long as the cutting cane is green, any of the original leaflets or new growth are still alive, or roots are apparent and vital, your rose is alive. Don't despair! Above: The bags with their cuttings placed under lights. A bright place with indirect light is also a good choice. HARDENING: When to open the bag? This is the tough one. Here are some conditions that should work: * Roots show on the bottom of the bag and you have 2 or 3 five leaflet leaves of new growth. * You can't see roots, but new top growth has approached the top of the bag and is not spindly or growth lower on the cutting looks mature. * There are strong roots on the bottom of the bag for several weeks and a bud eye has swollen but not broken. Opening the bag to harden the plant is the most critical time in the process. If you lose the rose, it will probably be at this point. Be sure that you have time to care for the rose on the day you open the bag and the day after. It doesn't hurt to put off the "coming out" until you have time. Patience!!! Open the bag for about one inch for about 3 hours the first day. Use a skewer stuck through the opening and into the soil to hold the bag vertical. Check the rose every hour. If the new growth droops or the leaflet edges brown, close and blow up the bag, wait a few days and try again. If the rose is unaffected by the opening, close the bag after the 3 hours. The next day, double the opening period and the size of the opening. Keep watching carefully. Keep up these increases each day until the bag is completely open. Backup a step if the rose can't take it. After the bag has been completely open a day, fold down the zip part. Keep in place another 4 days. Give it a spray once or twice every day.   POTTING AND PLANTING YOUR TREASURE: Now you will see the reason why I told you to tuck in the bag corners. If possible, do this next step on a plastic/newspaper covered table outside. Fill a clean pot one-half full with potting mix. The potting mix need not be the type you used in the bags. Place the pot in a saucer and wet the soil until it runs into the saucer. Indent the soil in the middle. Here's the hard part. Holding the bag over the pot, slip your hand into the bag under the potting soil centered under the plant. Slide the bag from under the soil mass and your hand while keeping the potting soil root ball as intact as possible. Slowly work the root ball and the plant into the pot with the stem centered and at the same angle it was in the bag. At right: Once the root system is sufficiently developed, as it is here, carefully remove the plant with soil intact. Be sure to cradle the root mass carefully to avoid too much trauma. The roots are delicate at this stage! Some potting soil will break off, but don't worry. Once the mass is into the pot, add the soil that broke off and gently firm it into place maximizing the plant position without significant root displacement. Make a tag with the info from the bag. Stick the skewer in the side of the pot and hang the tag on it. Later, when you have a solid cane, you may place the tag there, but don't block buds. Return the potted rose in its saucer to the same location you had it while in the bag. Keep water in the saucer to a level where some air can enter the top of the pot drain holes. This keeps the potting soil "sweet." Leave it there about 4 days. Your eyes will tell you when it is happy enough to move. If your weather permits, 50-degree nights or above, move it outside. Start in a bright or dappled, shaded location with a little morning sun and slowly move it during a week or two into full sun. Depending on your climate (I'm in USDA zone 9b, Sunset 17), you may need to move it inside at night for a while (I don't). Your eyes should be the judge of how strong the rose is and how fast it can progress. It ain't rocket science, just judgment and ... Hey! patience. If you have a lot of gallon pots with cuttings, an old plastic garbage can lid can be a saucer to seven. After a week or so of success in full sun, continued growth, and given warm weather, plant it in the ground or a larger container, just as you would any other potted rose giving regard to the variety, vigor, and its requirements for space and sunlight. Always plant it or place it in a larger container if roots show at the drain holes. Through all this and for the first month in the garden, make sure it gets water every morning. All of this timing depends on watching the rose. Proceed if the rose is growing and gaining strength, back off if it droops or the leaves brown. And, just like teenagers, some try to flower too soon! Pinch off buds until you have a good strong plant, at least 3 months. (You may cheat and leave one bud to see the first bloom. But then, pinch it off!) Fertilize with liquid fertilizer or fish emulsion at least every other week. I've also found that misting each morning with the fertilizer/baking soda mix definately promotes healthy growth. Stop fertilizing at the beginning of September in cold country; later in warmer climes. Provide extra protection the first winter.Repeat-blooming roses will usually put forth a first bloom in about 8 weeks. Once blooming roses won't bloom until the next year because they bloom on old wood. Growing roses from cuttings is not hard. Both the process and the results are fascinating and the roses you grow are somehow more yours to enjoy. This paper expands on instructions in the Rose FAQ (Frequently Asked Questions) available on the World Wide Web at: http://www.ars.org. I acknowledge my debt to rosarian Cheryl Netter who first described the baggy method, nurseryman friend Tom Liggett and others who provided added details and insight, and Paul Barden who helped illustrate this article with his great digital photos. These instructions are tailored to my area (USDA zone 9).

Potassium: A Special K-Ration Feast For Your Roses

Providing a Potassium (“K”) feast for my roses in the six weeks prior to the first hard freeze of early winter has been an important part of winterizing my roses for over 20 years.  And yet, few, if any, rose-gardeners seem to know anything about it.  I have noted with pleasure the large number of rosarians reading my blog, not only in the U.S. and Canada, but also in other northern climates, such as Russia, Germany, France and the U.K., all of whom stand to benefit from learning this winterizing trick.  It doesn’t have to get as cold as Minnesota in your rose garden for this to be useful!

Here is a quote from Burpee’s American Gardening Series book Roses, by Suzanne Frutig Bales, which is the only place I have read about using Potassium for winterizing:

“Potassium is an important mineral for sturdy stems and foliage.  Weekly feeds of a gallon of liquid potassium (1 tablespoon of muriate of potash (0-0-62), dissolved in 3 gallons of water) per bush, or a granulated feeding of potash magnesium (0-0-22), during the six weeks before the bushes go dormant, will give the bushes an additional boost for winter, extending their hardiness into another hardiness zone, perhaps two.  Excess potassium, when available in greater amounts than nitrogen and phosphorus, is known as the ‘potassium feast’.  It will block the growth-promoting effects of nitrogen and phosphorus, hardening the canes in time for winter.” (emphasis mine)

Here in Minnesota, I begin my roses’ potassium feast in the second or third week of September.  That takes me through the end of October or beginning of November, which is about as late as I want to go.  There have been years, perhaps when I started a little too late, that I’ve had to thaw out my hose or turn off my water and turn it back on again in order to complete the sixth treatment.  You have to be the judge of when to get started in your area, but my advice is don’t wait too long, because it’s better to be too early than too late with this. 

I use Muriate of Potash (0-0-62) that I get in 50-pound bags at a local farm-supply store (Waconia Farm Supply near Minneapolis).  By the way, I define a farm supply store as a place that sells bulk fertilizers to farmers, not someplace that sells bird-seed to bird watchers.  A 50- pound bag of Muriate of Potash lasts me five years or more, because you really don’t use that much in a year (i.e., one TBP/three gallons of water).  I mix it in a clean, 60-gallon trash container and apply it with a sump-pump, through a hose and watering-wand.  This little trick of using a sump-pump for applying liquid fertilizers is a huge work-saver throughout the growing season.  I read about it in the Twin Cities Rose Club Newsletter several years ago. 

The Muriate of Potash I get from the farm-supply store is a reddish, crystalline substance that doesn’t dissolve as easy as most liquid fertilizers.  I use as much water pressure as I can muster, through a nozzle turned on all the way, to get it dissolved.  The sump-pump goes in after the tank is full.  It also makes your clothes red, if you get it on you (as I always do), but it washes out eventually. 

After about the third-week’s application, you will begin to notice that the canes of your roses are turning a pretty shade of deep red, so you can actually see them hardening-off for the winter, which is fun to watch.  When I tell people that I think the potassium feast actually does extend my roses’ hardiness into another USDA zone, they usually scoff at me.  All I can tell you on that score is that I haven’t lost a single rose to winter-kill in many years and I am not an aggressive winter protector.  (See my recent blog post: http://theminnesotarosegardener.blogspot.com/2012/08/no-tipping-please.html ). 

I also believe that this method of winter protection is particularly interesting for northern gardeners worldwide, as we see the continuing effects of climate change in the rose garden.  (See my blog post of several months ago:
http://theminnesotarosegardener.blogspot.com/2012/06/climate-change-in-rose-garden.html ).
While putting on liquid-potassium for six weeks seems to be a lot of extra work in the rose garden, I think it actually can reduce the overall work of winter protection, once you gain confidence using it in your own garden. 

I would really like to hear from you, if you take my recommendation and decide to start using potassium.  Please leave me a comment below or, better yet, send me an e-mail to:

jfalkersr@gmail.com.com .  If I don’t already have you on my blog distribution list, I will be happy to add you, as well as answering any questions you may have about growing roses in the northern hemisphere.

 Jack Falker in Minneapolis

Some Deadheading Examples

Last month I posted an article called "Deadheading (Or Things My Mother Told Me)".
http://jack-rosarian.blogspot.com/2012/06/deadheading-or-things-my-mother-told-me.html

 At the time, I didn't have any examples to illustrate what I was talking about, but yesterday, as I walked through one of my three Buck "Earth Song" beds, finishing up the process on some canes and snapping spent blooms off others, I saw a couple of perfect examples of what I want to show you about my somewhat different deadheading process, which, as I mentioned previously, goes back many generations to my parents' rosarian/agrarian roots in Europe.  Also, please note that this method was recommended in an American Rose article a few  years ago.

Here are the pictures I snapped yesterday with my iPhone.  Note the strong new growth jumping out right below the stems that I left on the plants on my initial deadheading pass a week or two ago.  If I had cut those canes back further initially, all of that strong, new growth would have been eliminated.  As soon as I snapped these pictures, I snipped off the old stems just above the new growth.  Using this method, I now have Buck "Earth Song" and "Carefree Beauty" roses topping six feet tall.

As usual, a picture is worth a thousand words!

No Tipping Please!

I know it’s early to be talking about winter-protecting roses  in mid-August but, if you decide to do what I recommend here, it’s time to get busy.  I would add that, while this blog-post is directed toward rose-gardeners in Minnesota, it applies anywhere in the Northern Hemisphere, where winter protection is necessary, because winter has definitely changed in the last ten years, putting the Twin Cities and environs squarely in zone 5, with other locations around the world in warmer zones, as well. (Take a look at my blog post: Climate Change in the Rose Garden:

http://theminnesotarosegardener.blogspot.com/2012/06/climate-change-in-rose-garden.html .

Because of climate change, extreme measures of winter protection, like the “Minnesota Tip”, in which roses are laid-over into trenches, in my opinion, seem to be a lot of unnecessary, back-breaking work for northern gardeners.  In addition, this method (which I personally used for many years) has the additional disadvantage of disturbing the natural growth pattern of the plants and often, when the roses are raised, results in bud unions and roots being too close to the ground surface for good horticultural practices.

There are several good, protective alternatives, which are most common in zone 5 (and incidentally work just fine in zone 4, as well).  All involve building up soil or mulch around the base of the plants and then applying leaf cover in some form, after the first hard freeze.  It has always seemed to me that doing this was much better for the plants horticulturally than tipping them out of their normal growth pattern.  Handling all the leaves in both the Fall and Spring is also a lot of work, but there is a method, commonly used in Chicagoland, that makes it a lot easier.  Simply take a leaf bag, fill it about two-thirds full of leaves, tie it up, cut a slit in the bottom of the bag, and push it down over the rose plant, which has been cut back to about 18 inches and bound together with baling twine.  This works even better if the leaves have been shredded before you put them in the bag.  Incidentally, do not use the new (and very expensive) compostable bags because they will fall apart over the winter leaving you with a pile of leaves, along with pieces of the bag, around each plant in the Spring.  The nice part of using the leaf bags is that you can simply roll them off the plants with the leaves still intact, dump them either in your mulch pile or yard-waste container and throw away the used bags.  The leaves remaining around the plants can be worked into the soil, along with the residual mounding mulch, making a good natural fertilizer. Construction blankets can also be successfully used as an insulator, in lieu of leaves or leaf bags, but they present the added problem of having to store them somewhere for eight or nine months of the year. 

Typically, with either method, the plants will be as well-protected and ready to prune, as they would be if they had been tipped; just a little shorter.  The major difference will be that their roots have not been disturbed and can immediately begin growing toward the first Spring bloom. 

Warmer winters have become the norm in other parts of the northern hemisphere, as well.  For example, looking at the Arbor Day maps in my climate change article, Chicago has moved from zone 5 into zone 6, as well as much of the lower-peninsula of Michigan, where previously it had just been around the Detroit area. This means that much lighter winter cover, with just leaves or several inches of wood chips, may be in order for these areas.  My advice would be, if in doubt, use the leaf bag method described above, but with less mounding necessary.

For those who are ready to accept my “No Tipping Please” thesis, it’s time to get busy right now.  Your bud unions are either above or right at the ground surface and they need to be covered immediately to get ready for winter and the mounding process to come.  My advice is to order in a load of mixed black dirt, peat and sand to raise the level of soil around your plants so that all bud unions are below ground level.  

Once you have given your previously-tipped roses a nice new layer of dirt and sand, you will want to mound them further in the late Fall before putting leaves (or leaf bags) around them.  If you don’t have a mulch pile started to use for mounding this year, order in extra dirt and sand to set aside and use this Fall.  Next Spring you can use the leaves and surplus mulch/dirt you take off your roses to build a mulch pile to use for the next winter’s mounding; and then, as you can see, it just goes on from there, year-to-year. 

As time and future winters go by, you will become more confident in the amount and type of cover needed each year.  In any event, I’m pretty sure you will agree with my “No Tipping Please” thesis going forward. 

E-mail me with any questions:  jfalkersr@gmail.com.

Jack Falker

8/17/2012