PNW Gardeners or Anyone Who Can Answer the Question Please
Lynn-in-TX-Z8b- Austin Area/Hill Country
6 years ago
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portlandmysteryrose
6 years agolast modified: 6 years agoLynn-in-TX-Z8b- Austin Area/Hill Country thanked portlandmysteryroseRelated Discussions
Please answer my rose slug question. Tx
Comments (14)>Other question: Do rose slugs only feed from the underside of the leaf??? Has anyone every spotted them on the top side of leaves or on the canes??? Jim, my memory is incomplete. I might have seen some on the tops of leaves, but if so, that's not the most common place to find them. For sure I've seen a zillion of them on the canes, as well as the undersides of leaves. I've also seen multiple times when canes were chewed all the way around, sometimes leaving just a thin thread holding the upper part of the cane still attached but hanging down totally upside down. And I've often seen long, often not so shallow, chewing cuts into the cane, going down or up the cane from somewhere in midcane. Usually, but not always, this results in the cane turning totally black throughout that cane area, necessitating that that dead cane be cut off and sealed. And if I didn't seal the ends of any sizable cut cane, that cane would become black fairly quickly and have to be cut again and sealed. Lots and lots of that happening here, starting in April and going on well into the fall. Until the start of Rose Rosette Disease here, this was by far the #1 problem for our roses--with blackspot, cercospora or anything else not even coming close. My theory is that because our yard has lots of woods and also some pretty low damp areas (especially last year when we had an unusual amount of steady rain throughout the summer instead of drought) it has or had conditions especially liked by sawflies. >I even found an article with the exact picture... I don't think I remember ours being curled around, though some might have done that and I was just focused on the straight kind. Using photographs, I've seen many, many straight ones climbing canes and on stems. They are hard to notice with the naked eye, but enlarging pictures on the computer screen works wonders. I don't have pictures of the undersides of leaves, but for those I turned over, I could notice them with the naked eye better... and there were a lot of those there too. == >I've used iron phosphate products for slugs and snails and it works, but I don't think it's effective for the sawfly larvae. Thanks for your information, Hoovb. Oh, well! We already do have the product, so we'll give it a try anyway, hoping that our varieties are a bit different than yours. Grasping at straws here, I know... The roses I started trying the product out with a couple of weeks ago have already succumbed to RRD, though, so I've no idea thus far on whether there's any chance that it might work here. Your post inspired me to actually read the label (novel idea!) and I did not see any of the specific types of slugs mentioned there that I could find in one of my books as some of the sawfly slug varieties that can affect roses, so your experience might well predict ours too. On the optimistic side, though, it does say that those particular varieties listed aren't the only kinds of slugs it will work with, and mentions also that it's effective for slugs on blueberries and apple trees (plants with some relationship to roses, I think). Anyway, we'll see... assuming that by the time RRD is finished with us here we have some roses left to try the product on. Oh, I did read one other interesting thing: if you don't want to pick each and every one off by hand--no chance!--one of my books says that a strong spray with the hose will work. I don't know what percentage will have the strength to climb back up, but the spray coming from the side will at least put them at some distance away from the cane (and for all our new roses in the pots, they'd have to climb the pots too). I've been mainly doing that for aphids, but it will certainly be a bonus if it helps with rose sawflies too! Best wishes, Mary...See Morehave a couple of questions. someone please answer!
Comments (4)I don't think that Yellow is an Iris ensata colour. There have been cross breds between the two species, but ones I have seen are usually cream rather than yellow, and i very much doubt that they would spread like pseudacoris. I think you have a pseudacoris there. Also bear in mind that it is not just the vegetative spread that is a worry environmentally. Seeds are likely to be more of a problem. I don't know if birds carry them, but clumps growing by rivers could easily shed seed into the river to be carried far and wide, to create new rogue plantings. Removing seeds is a good idea, but there will always be the possibility of missed pods, or that year when the weather was too bad to go out, or you were sick, or you sold the house and the new owners let them go to seed. If you are in an area where a plant is considered a noxious weed, then the best decision is to get rid of it. It's very altruistic to think you can control it, but it doesn't always work....See MorePlease answer this question!
Comments (15)Update: I actually broke down and called UT Knoxville Veterinary College, Dermatology Dept. Heard back from them today. According to them, it could be environmental...either from the mulch, or also potentially the grass. She said she had seen cases of this previously. We also talked to Derry (can't think of last name). Local mushroom/fungi expert. Featured on Tennessee Gardener a few weeks ago, if you're a fan of that show. He did not seem to think plant fungi could be harmful to dogs. Stalemate. What I need here is a veterinary dermatologist with a minor in mycology. :) I thought it was actually mycelium/hyphae that live below ground, and spores came from the fruiting bodies above ground. Am I mistaken? I think the recommendation I'm going with for attempting to rid myself of fungi is aerating the mulch, and perhaps adding thick chips of pine bark. I'm going to work that in this weekend. Other than that, I'll start praying for dry weather. FYI, an interesting fact picked up from a past president of the master gardeners: Horsetail grass is one of the most effective natural antifungals. He suggested boiling it and pouring the water in affected areas....See Morelinnea has a question I can't answer
Comments (3)I'm glad there is more than one option. Funny, I looked for a link at the bottom of the page, even though I knew I had seen this before. THat big box was so large, I almost didn't see it!...See Moregardengal48 (PNW Z8/9)
6 years agoLynn-in-TX-Z8b- Austin Area/Hill Country thanked gardengal48 (PNW Z8/9)Lynn-in-TX-Z8b- Austin Area/Hill Country
6 years agolast modified: 6 years agoSheila z8a Rogue Valley OR
6 years agoLynn-in-TX-Z8b- Austin Area/Hill Country thanked Sheila z8a Rogue Valley ORMelissa Northern Italy zone 8
6 years agoLynn-in-TX-Z8b- Austin Area/Hill Country thanked Melissa Northern Italy zone 8Lynn-in-TX-Z8b- Austin Area/Hill Country
6 years agolast modified: 6 years agogardengal48 (PNW Z8/9)
6 years agoLynn-in-TX-Z8b- Austin Area/Hill Country thanked gardengal48 (PNW Z8/9)Lynn-in-TX-Z8b- Austin Area/Hill Country
6 years agolast modified: 6 years agoportlandmysteryrose
6 years agolast modified: 6 years agoLynn-in-TX-Z8b- Austin Area/Hill Country thanked portlandmysteryrosegardengal48 (PNW Z8/9)
6 years agoLynn-in-TX-Z8b- Austin Area/Hill Country thanked gardengal48 (PNW Z8/9)Lynn-in-TX-Z8b- Austin Area/Hill Country
6 years agolast modified: 6 years agoRosylady (PNW zone 8)
6 years agoLynn-in-TX-Z8b- Austin Area/Hill Country thanked Rosylady (PNW zone 8)gardengal48 (PNW Z8/9)
6 years agoLynn-in-TX-Z8b- Austin Area/Hill Country
6 years agolast modified: 6 years agoLynn-in-TX-Z8b- Austin Area/Hill Country
6 years agoRosylady (PNW zone 8)
6 years agoLynn-in-TX-Z8b- Austin Area/Hill Country thanked Rosylady (PNW zone 8)Lynn-in-TX-Z8b- Austin Area/Hill Country
6 years agolast modified: 6 years agoSheila z8a Rogue Valley OR
6 years agoLynn-in-TX-Z8b- Austin Area/Hill Country thanked Sheila z8a Rogue Valley ORLynn-in-TX-Z8b- Austin Area/Hill Country
6 years agoLynn-in-TX-Z8b- Austin Area/Hill Country
6 years agolast modified: 6 years ago
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