Have you used netting to keep japanese beetles out of the garden?
The smallest mesh I can find is 1/4" and I'm not sure that is small enough. Have any of you tried it? They devoured our tomatoes last year, along with the roses and basil.
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https://www.arbico-organics.com/category/japanese-beetles-control
GREENHOUSE MEGA STORE online carries fine mesh.
Insecticides provide effective control of adult Japanese beetles. Imidacloprid (Merit) moves systemically through the tree to provide control. Soil applications require 2 months to move through the tree and so are not practical now for this yearļæ½s infestation. Imidacloprid (Imicide, Pointer) injected into the trunk or root flare takes only 2 weeks to move through the tree. Occasionally, about one tree in seven, the imidacloprid does not provide control systemically, so you need to watch for this. Once in the tree, the imidacloprid should be effective for at least a year.
Carbaryl (Sevin), clothianidin (Arena), cyfluthrin (Tempo), and dinotefuran (Safari) provide about 2 weeks of protection per foliar spray. With the beetles present for about 6 weeks, three applications are typically required.
Because the adult beetles prefer foliage previously damaged by other Japanese beetles when they change hosts, early hand-removal of beetles is effective. In the late afternoon and evening, disturbed beetles fold their legs and drop to the ground. By holding a widemouth jar of rubbing alcohol (isopropyl alcohol) or soapy water under beetles and poking at them, one can easily collect a pint or so in less than an hour. If this is done every day or two for the first couple of weeks after the beetles emerge, subsequent damage through the summer is reduced. Although labor-intensive, this may be a viable option for clientele.
Hi Rymea!
Last year we ordered japaneses beetle traps from Amazon and I know we will this year as well. Here they are:
https://www.amazon.com/s?k=japanese+beetle+traps&crid=2AGKF5NVHBSKB&sprefix=japanese+beetle+%2Caps%2C194&ref=nb_sb_ss_i_1_16
Old sheer curtains are very effective covers, due to the fine weave. They are generally found at second hand shops.
I put coffee grounds around my rose during the winter but Iāll try soap
Thank you and good luck
Try window screen. It comes in rolls. Amazon has Garden mesh netting in Ultra fine.