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Categorized as disease resistant, but are they really?
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Posted by
gardenerzone4 Midwest 5b (
My Page) on
Fri, Jul 20, 12 at 5:09
The roses below are listed as disease resistant on both Rogue Valley's website and in HelpMeFind.
But are they really? I'm particularly interested in blackspot resistance.
SHRUBS
-- Joyce Barden (apricot)
-- Lichtkonigin Lucia (yellow, low thorn)
-- Precious Dream (pink blend Hybrid Bracteata), supposed to do well in heat
HYBRID TEAS
I find it hard to believe that any hybrid tea is truly BS-resistant in heavy BS areas, but would love to be wrong.
-- Ingrid Bergman (red)
-- Tournament of Roses (pink blend)
-- Earth Song (deep pink)
-- Seashell (orange-pink blend)
-- Audrey Wilcox (dark pink blend) |
Follow-Up Postings:
RE: Categorized as disease resistant, but are they really?
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| In most areas with substantial BS pressure, 'Earth Song' is resistant. In the very worst areas, such as southern Appalachia and the Chesapeake region. it is resistant in some gardens and semi-resistant in others. That is, you might get up to 50% defoliation. But in the Midwest, it should be little or none. Additionally, ES is one of the best bloomers among large-flowered roses, and it is cane-hardy at around -10 F. (I am drawing on dozens of board posts from around the country as well as my own very positive experience with ES.) This is a truly outstanding and widely adapted variety. Given Rogue Valley's location, they probably don't have experience with severe blackspot pressure. |
RE: Categorized as disease resistant, but are they really?
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Support what Michael said avout ES.
Joyce Barden is not BS resistant here.
Olga |
RE: Categorized as disease resistant, but are they really?
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| My Ingrid Bergman is a spectacular bloom..but that rose is not disease resistant in my area. |
RE: Categorized as disease resistant, but are they really?
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- Posted by TNY78 7a-East TN (My Page) on
Fri, Jul 20, 12 at 13:28
| Tournament of Roses was covered in BS here. Actually shovel pruned it after it didn't overwinter well last year. Tammy |
RE: Categorized as disease resistant, but are they really?
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| In my garden Ingrid Bergman is as far from black spot resistant as you can get...She flourishes only because of Bayer's Advance Disease Control for Roses, Flowers,and Shrubs... |
RE: Categorized as disease resistant, but are they really?
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| You have all made me very excited about Earth Song. It's like discovering another treasure that I can add to my arsenal of BS-resistant roses! And beautiful and fragrant to boot! Are there other remontant roses, like Earth Song, that you high recommend for BS resistance? |
RE: Categorized as disease resistant, but are they really?
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| If you are looking for HT-like roses that are relatively winter-hardy and blackspot resistant, I can recommend Prairie Harvest and Mother of Pearl as well as Earth Song. Probably a number of the other Griffith Buck roses would work for you. |
RE: Categorized as disease resistant, but are they really?
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| Is Carefree Beauty BS-resistant and truly fragrant too? |
RE: Categorized as disease resistant, but are they really?
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| Mother of Pearl is definitely on my list for next year. How BS-resistant are Sedona and Olympiad? Also, J&P's latest catalog is selling potted own-root roses. I've never had luck with their bare roots, and I only grow own roots, so I thought I might give these potted own roots a try. But planting in fall is very novel for me. Is it better to just keep the rose in the container over winter in the garage and plant in spring? Or can own-root roses really be planted in the fall in Zone 5b? |
RE: Categorized as disease resistant, but are they really?
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| If the own root has a well-developed root system, you could try it. I have had poor luck with fall plantings of own-root bands, better luck with 1-gallons. But in general I no longer plant after August. I wouldn't even bother ordering, or at least having the roses shipped until the spring. Let the dealer overwinter the plants. |
RE: Categorized as disease resistant, but are they really?
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| As a midwesterner (Zone 6), I would avoid planting in the fall. If it is in a pot and has not been hardened off, you should not even consider planting it until later springtime--until AFTER the last frost date for your area. As to catalogs listing roses as disease-resistant, the rule of thumb I use is, if they list lots of disease-resistant roses, they are lying. There are not "lots" of disease-resistant roses. However, if a catalog occasionally lists one as disease-resistant or very healthy, maybe they are telling the truth. The other rule I observe is whether they list CORRECTLY a rose I already have and know about. For instance, I know from experience and from this forum that Earth Song is pretty good on disease-resistance. If the catalog gets it wrong, I don't trust the catalog. I also check 1 or 2 roses that I know have some disease-problems. If the catalog lists them as disease-resistant, then I really, really know they are liars! Just need to develop some good shopping skills rather than believing everything the marketing people lie about in an attempt to make another sale. : ) Kate |
RE: Categorized as disease resistant, but are they really?
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- Posted by seil z6b MI (My Page) on
Sat, Jul 21, 12 at 9:42
| I would never classify Ingrid as disease resistant for my area. She spots with the best of them and isn't very vigorous either. |
RE: Categorized as disease resistant, but are they really?
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| My Tournament of Roses is clean in my dry, arid, summer climate. The rose is probably at least 15 years old, budded, and going strong. Even in spring when we get a lot of rain and have cooler temps, it has been clean. Precious Dream did not thrive in my garden, under my care routine, but I gave it away to someone who as a different micro-climate and he raves about the rose. Smiles,
Lyn |
RE: Categorized as disease resistant, but are they really?
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Olympiad is not rsestant.
Olga |
RE: Categorized as disease resistant, but are they really?
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| I'm also happy to learn about Earth Song since I've ordered it and it will be shipped in October. I don't have black spot pressure but do have a hot, demanding climate and needed a replacement for the gopher damaged Yves Piaget. If it's a winner I'd be happy to replace a few other marginal performers with it. Once I find a good rose I have no problem with having multiples. |
RE: Categorized as disease resistant, but are they really?
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- Posted by TNY78 7a-East TN (My Page) on
Sat, Jul 21, 12 at 12:31
| Carefree Beauty is FAR from carefree here. It usually is almost completely defoliated. I purchased it because I thought it would do well, but that's not the case :( However, I'm kind of interested in trying Earth Song now... Tammy |
RE: Categorized as disease resistant, but are they really?
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| Olympiad was highly susceptible to blackspot in my garden, like almost every older HT. Carefree Beauty is resistant in many gardens, but susceptible to at least one race of BS that you may or may not have. It is not very fragrant. |
RE: Categorized as disease resistant, but are they really?
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| "Joyce Barden (apricot) " Does anyone really grow that? After 8 years, mine is 12 inches tall. It's departing this fall. As far as BS resistance in your area - try La Marne and Prairie Sunrise. Both are really great out in NY, where we have sweltering humidity. |
RE: Categorized as disease resistant, but are they really?
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| I've got one for you. I have been growing the Buck rose "Golden Unicorn" for about 10 years. I don't spray, water or fertilize it, and apparently I can't kill it. It is planted in a completely separate part of the yard from all the other roses, so I tend to ignore it. I've never seen on spot of blackspot on it. I used to grow "seafoam" which was equally indestructible. Never a spot on that one, either. Tournament of Roses grows well for me, but I spray that one.
Ditto for Ingrid Bergman and Olympiad. Olympiad is really fantastic, though. You might be able to grow it if you're willing to spray sulfur or copper fungicide. |
RE: Categorized as disease resistant, but are they really?
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It is all so area specific. Golden Unicorn and Prairie Sunrise are certainly not resistant here. You need advice from somebody close to your area, not just zone.
For example I am in MD zone 6b, before in my life I lived in CT also 6b, before that I was in KY, also 6b. These tree places are very different in terms of which roses you can grow without spraying.
So my advice is to listen to midwest folks and more or less ignore comments from vendors or other posters not from midwest.
Olga |
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