Roses forum: George burns rose

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White Bird idaho
CAtoID
Jul 8, 2019 12:14 PM CST
Two years ago I moved my potted George burns from zone 8b to 6a. The first winter I moved the pot to a non heated small green house. Then to an open deck in the spring it did great. This past winter I left it on the deck it got snowed on and the ground froze. It appears to have died above the graft. 😢 would it have been better to plant it? Suppose to be hardy to zone 4.
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Name: Mike Stewart
Lower Hudson Valley, New York (Zone 6b)
I was one of the first 300 contributors to the plant database! Photo Contest Winner 2020 Garden Photography Roses Bulbs Peonies
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Mike
Jul 9, 2019 9:54 AM CST
During cold winters, the roots and bud union of a potted rose left outdoors (or even in an unheated enclosed environment) are more vulnerable and go through more stress than an in-ground rose, for a variety of reasons. One of them is temperature fluctuations. The more stable the temperature around the roots and bud union, the better. This is why we sometimes mulch roses in the winter: not to keep them warm so much as to keep them consistently cold (and to protect the bud union if it's not underground). Root health then affects the rest of the rose; i.e., the canes above the graft.
[Last edited by Mike - Jul 9, 2019 9:57 AM (+)]
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Name: seil
St Clair Shores, MI (Zone 6a)
Roses Garden Photography Region: Michigan
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seilMI
Jul 9, 2019 1:03 PM CST
In zone 6 planted deep, with the graft a few inches below the soil, is the best chance of wintering a rose. If kept in a pot the best place to winter is in an INSULATED but NOT HEATED garage or shed. An uninsulated garage is just OK but can be iffy if it's a real nasty winter with lots of freeze and thaws. If you winter them inside a building you must water them about once a month to keep them from dehydrating. When I stored some in my shed I would put a shovelful of snow on top of the pots every time we shoveled. If it didn't snow I used a gallon milk jug and gave each pot a gallon of water. Dehydration is just as big a killer as the cold. If you're storing them in a garage or shed with a concrete floor I also recommend that you put them up on blocks or something so they aren't sitting on the concrete. Concrete absorbs water like a sponge and will dry out your roses.

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