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What pest is this?
Mike wrote in
: I'm glad to hear that you have had good results with Orthenex and don't seem to notice a population problem with your beneficials. I'm worried about the amphibians, birds and bees, though. They particularly stressed how toxic it is to amphibians. I'm just trying to be safe and not sorry. Like I said, it's not panic time yet. Thanks for doing this research, Mike. I was interested myself because I was bedeviled earlier this spring (for the first time) by rose slugs, which are a variety of sawfly larvae, though I'm not sure if you have one kind of sawfly you'll inevitably suffer from the other. A cursory look at Baldo's insect site as well as some other horticultural-pest sites suggests that the slug's method of attack is different, at least from what I can tell. As you note, pruning actually takes care of rose-stem sawfly larvae. I don't have amphibians like you do (it would be an interesting addition to the garden if I did) but I do have lots of non-plant life including hummingbirds, bees, moths and butterflies (just saw a Mourning Cloak this weekend...haven't seen one of them in almost forty years), and earthworms, all of which I like to accommodate. The rose slug larvae seem controllable with either hand-picking or insecticidal soap, used carefully. It doesn't look as though you can find the rose-stem sawfly larvae on the plant surface, however. So far my own rose slug problem seems solved, at least till the next cycle...fingers crossed for now. But this is the first year I've had so many roses (85 so far) and the propensity for pests and problems has increased for me as a result. It's been an eye-opener...though of course the roses are worth it. ---- |
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