Wooly Aphids

sw

Hey Everybody, I have a 15 year old shohin size cotoneaster that has wooly aphids. I noticed a month or so ago that the tree had aphids so I sprayed it down with a heavy stream of water and then sprayed it with schultz insect spray and that seemed to take care of those. About 1 week ago I noticed fuzzy white growths on the trunk and in the crooks of the branches, I read up and realized it was probably wooly aphids so I treated like I have in the past, only this time I took a toothpick and scraped all the growths I could see off before hosing and spraying. For some reason this did not work. I have been repeatedly scraping the growths and spraying with a heavy stream of water but to date it's not working. I haven't been using the schultz bug spray every time because I don't like to use that more than once weekly. I have many trees but this one seems to be the only one I'm having trouble with, it repeatedly is getting infested. I'm not sure what I should do next. Does anyone have any other suggestions on treatment? All would be appreciated. Thanks.-sw

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TreeBay

These guys are tough. The waxy coating they secrete resists a lot of chemicals.

You can try adding a drop of dishwashing soap as a wetting agent. I finally used isotox on mine and it seems to be working. Malathion didn't stick.

There are some wetting sticking agents you can get at Orchard supply that can help. Nasty pest!

Regards,

Matt

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