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'Dornröschen' rose Reviews & Comments
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Initial post
24 JUN 07 by
Unregistered Guest
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Dornroschen defoliated 80% due to rust in Central Coast CA area. It was a beautiful rose, and that first flush each year was fantastic - but it is long gone.
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Thank you for your post. You probably just saved me the same disappointment you experienced. Rust doesn't seem to be a big problem in most parts of the US, but it's a big, big problem in coastal California. It certainly has been the major cause of the death or removal of roses in my garden. We hear a lot about blackspot on HMF, and also mildew, but very little about rust unless its from a coastal California gardener. I know blackspot can be horribly disfiguring but I don't think it often kills a plant. Mildew is ugly, but doesn't kill. Rust is stealthy and can be lethal. And the worst part of it is, that when folks talk about disease resistance, they're usually talking about blackspot and mildew, not rust. I have encountered any number of roses described as disease resistant that were martyrs to rust. That's why comments here about susceptibility to rust are so welcome. Thanks again!
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A lot of North American Briar species are prone to rust. This rose was bred in the 1960s, so it was among the first of its kind, where ideas like rust were not at the forefront of a breeders mind.
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So, looking at the parentage tree, which rose would be eliminated - if we were breeding Dornroschen again
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There are many ways to crack an egg. Could use more modern, more compact large-flowered types, with no known lineage proneness to rust, and use Rosa acicularis again. Then selecting out the rush and other ailments vigorously, while also testing for cold hardiness. The other route would be to replace Rosa acicularis with another known cold hardy species. There are a handful to select from. Rosa rugosa can also produce rust, among a few others, but there are some sub-polar rose species that do not.
One thing is that rust resistance still isn't something there is a lot of information on. Maybe research of other plant genera could help, which is more likely to exist (like malva family, for example).
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Aha - the word from an eggspurt. Thanks Michael. In my wet-winter, dry-summer, acid soil, own-root garden, I have only ever noted rust on 'Sachsengruss' and 'Rubaiyat'. I have never noted rust on these three that are said to be susceptible: 'Agnes', 'Constance Spry' or 'Sarah van Fleet'.
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Does Agnes defoliate from BS there? It does here :[ Yeah, rugosa hybrids can be prone. A lot of the pre-1950s damask red types can be, too. I **believe** Playboy got its susceptibility from the Spartan line, which is prone (just like Electron is), which came from the Fashion line, which came from the *drum rolllll* Crimson Glory line.
Easy to bred out, I believe. I had had perfectly fine Playboy hybrids, growing in malva weeds galore.
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I think 'Agnes' might defoliate a bit, but as we get a reasonable bit of spring rain, defoliation is a part of rose life here. As the weather dries out later on, the bushes put out new healthy leaves and they are set for summer. I never worry about a bit of black spot - auto correct plays hell with that last word. (I never worry about thorns either. I've just learnt to move slower and more carefully around roses. I am very well dressed out there with the roses: hat, gloves, long sleeves, thick trousers.)
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My garden is horrendous for blackspot but 'Agnes' is one of my healthiest roses with no blackspot at all.
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'Dornroschen' is being offered this year by Palatine Roses.
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'Dornroschen' was recommended in the Alberta Horticultural Guide many years ago as a rose to plant in this province. Indeed, its crown hardiness is comparable to the Parkland rose cultivars, but its flowers have better form and fragrance. Well worth trialing in a Zone 2 or 3 climate having good snow cover, but the shrub should be, of course, grown on its own roots in a very cold climate.
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Does anyone know where I can buy this rose mail-order (USA) own-root? Of the US/Canada nurseries listed as mail order sources:
Greenmantle is not currently selling this rose, though they list it as being in their collection.
Hortico is selling "Dornroschen X" aka "Lyn Griffiths," but not its parent Dornroschen.
Mark of Excellence Roses (which is only rated fair+) is sold out.
Vintage Gardens is currently offering it only custom root, which I have already done once, but unfortunately it died.
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Heirloom has in on sale right now.
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Thanks!
I eventually bought one, from Greenmantle as I recall.
Mike
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