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Knockout roses
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Posted by
fitzerroneous z4 MN (
My Page) on
Tue, Jun 12, 07 at 15:23
| Anyone had any luck growing Knockout roses? I generally distrust new introductions that everyone raves about (see the Endless Summer thread), but I thought Knockout had been around long enough to be proven hardy.
I bought a Rainbow Knockout last weekend and was dismayed to read that it might not be as hardy as I thought... I'm up in Duluth, on the edge of zone 4.
Fitz |
Follow-Up Postings:
RE: Knockout roses
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- Posted by john_w Z4a Minn, US (My Page) on
Tue, Jun 12, 07 at 21:26
| No, they are not hardy in zone 4 and points north. A shame since the hybridizer is from Wisconsin. I had three. Two died the following winter. I replaced them. Next winter one died and the others were weakened. Next year the last one died. I am in the Twin Cities. I have many roses. Knockout was one of the least winter hardy roses I have ever attempted. |
RE: Knockout roses
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| I've had knockouts for 3 years. They always die back to within 4 inches of the soil but I haven't lost any yet. Mine are own root and I don't give them any extra protection for winter. They are right next to the sidewalk and get quite a bit of snow shoveled onto them though. Not all zone 4s are created equal. Wind exposure, snowfall, individual micro climates, health of the rose going into fall, etc will all play a part in survival of marginally hardy plants. |
RE: Knockout roses
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| I have the knockout red - two of them. So far so good. They're blooming crazy. I'm in Northfield & have them between the sidewalk & the house. The roses are soooo pretty. Also have a couple Lady Elise May's. They are blooming like there's no tomorrow also. They make me look like I know what I'm doing! But I'm definitely just a neophyte. The knockouts do need some straw coverage or protection. I do it for the Elise May also. That's pretty much all they need. I think you'll run into trouble if you don't. |
RE: Knockout roses
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| My mom has purchased and lost several of them (elk river area) because they are "zone 4". It really bothers me that stores/nurseries carry these marginal/non-hardy roses when there are some really great shrub roses that are very hardy to our area that most places never seem to carry. Same goes for boxwood. The cultivar "Wintergreen" is great for our area-but all you ever see is some zone 5 thing ready to burn up in the winter sun. |
RE: Knockout roses
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| Our neighbor has one, but they listened to us when I told them they'd need to protect it in the winter - it's dong BEAUTIFULLY! Never large, but blooming perfectly. It's in a protected spot against the fence and buried deeply in leaves after the ground starts freezing. -Marie |
RE: Knockout roses
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| I have three, and two have been covered and in the ground for probably 3-4 years now, and teh other was not covered and was put in late after sitting on Home Depot' parkig lot all summer. All three freeze to close to the ground but come back nicely for me. |
RE: Knockout roses
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After I wrap them in burlap, can I put a plastic container over them. Snow is shoveled on them. And we get lots of snow and cold in sauquoit NY
Thank you
Carol Rawls |
RE: Knockout roses
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I have had fair luck with the red one. A friend has a gorgeous floriferous vigorous one, by comparison. Mine isn't the most vigorous, but it bloomed that gorgeous red until now. The other colors of Knock Outs all died for me. I don't cover or do anything for them. The red gets a little more sun than the others did.
gramma jan |
RE: Knockout roses
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| Ditch the Knock Out roses for a Minnesota garden. Instead, get Oso Happy roses. Two cultivars have been introduced: Petit Pink, with double pink flowers; and Candy Oh, with single red blooms. Both were bred by Minnesota hybridizer David Zlesak. |
RE: Knockout roses
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| Mine all died Wont try again |
RE: Knockout roses
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| Mine all died Wont try again |
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