If you discovered RRD infected canes in your rosebushes...
sujiwan_gw 6b MD/PA
9 years ago
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seil zone 6b MI
9 years ago
henry_kuska
9 years agoRelated Discussions
Have you had RRD in your garden? (cross-posted)
Comments (8)I had RRD five years ago. I dug up approximately 16 roses. I did nothing to stop it early as I didn't recognize what it was that was affecting my roses. It appeared around July. I dug up the roses in November. I replanted the following spring, and the problem did not return. I actually did have a few bad leaves the next two years on some other nearby plants that were not dug out, as they were not nearly as badly affected. I would simply cut the suspicious looking growth out. None of these plants were removed, and are clean of RRD. My garden has been entirely clean of RRD now for about 3 years. I recommend that such growth be cut out as soon as it is seen, as pruning it out at the top may save the rose. It seems to start at the top and if given time will move into the bottom of the rose and grow into other branches that were not previously affected and then your rose bush is doomed. The medicine was harsh. I lost some great roses, and didn't really have the money to put toward getting roses of my choosing. I accepted donation replacements, and bought a few own root roses, and my rose garden is not what it had been. The main symptom was elongated leaves. An individual RRD leaf looked somewhat like a an individual marijuana leaf. ISU Extension Service examined my photos as well as someone else on this forum and both told me they believed it to be RRD. Iowa State University operates Reiman Gardens, which has a very large population of roses. ISU told me they did not know RRD had gotten as far north as where I am located in Iowa. But they contracted RRD that year at Reiman Gardens. They are about 130 miles away, but only about 44 miles to the south of us. This was Iceberg when infected by RRD. Note the elongated leaves and misshapen flowers. Don't wait to start trimming bad RRD growth out if you are trying to stop RRD's spread: Note the elongated leaves:...See MoreHot Cocoa has unusual canes--this isn't RRD, is it?
Comments (29)It is not uncommon for roses to have basal canes with prickles and flowering laterals that are sparsely armed or even unarmed. We encounter this sometimes when we are trying to ID unknown roses. One says their found rose can't be the same as some named variety because theirs has no prickles. Eventually, upon closer inspection, we find that the flowering canes are thornless, but the basal canes, sometimes even only the base of the basal canes, have prickles. Come to think of it, it wouldn't surprise me if the budwood or cutting used to propagate Hot Cocoa were unarmed, but eventually, new basals with normal armature emerged. I saw the same thing on my ownroot Tamora. The young growth the first year was sparely armed, but the first major hefty basal - and every subsequent basal - was massively thorny....See MorePossible RRD on Gallica---Your opinions, Please
Comments (4)Hi again, Belmont. I traveled to the garden dot org site to check out your photos. As others such as Patty have noted, there are a number of odd features, probably the same ones that caught your attention. I'd be VERY cautious with growth like that. I noticed that Christopher suggested cutting out the entire cane and waiting to see what comes up. At the very least, I'd do that. Since you are so on top of your garden, this method sounds like it might be a reasonable one if you wish to save a special rose and have a calm disposition that doesn't lie awake and worry at night. (Yes, me. I'm talking about me.) :-) If there was herbicide spraying in your area that might be the issue. I've not seen herbicide damage that looks exactly like your photo, but I've also never seen herbicide damage on a Gallica, only newer cultivars. Please do let us know how things unfold. Wishing you all the best! Carol...See MoreHow soon to plant a new rose in the spot of a RRD infected rose?
Comments (11)Hello Lin Most of what I have read says to wait about 1-2 months before planting another rose in that spot. That info is corroborated by roserosette.org (which has USDA and other backing) here: https://roserosette.org/control/ I share your RRD woes and experience. I had a rose Mohana, that I didn’t care so much about, contract RRD. I pruned the infected cane down to the base. Not only did the RRD re-surface on Mohana, but it also infected one of my prized big climbers next to it, Lavender Crush. A hard lesson learned, but now whenever I see the 1st sight of RRD, I remove the entire plant. Many locals ask me about rose advice , RRD and otherwise, and I unfailing advise them to remove the entire plant ASAP. It’s advice that no one wants to hear and few will follow, unfortunately. I’ve not seen any RRD so far this season in my garden...fingers crossed....See More
Buford_NE_GA_7A
9 years agosujiwan_gw 6b MD/PA
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amanda
9 years agoseil zone 6b MI
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