Quote:
Originally Posted by Static
Let us know if you find a solution for the aphid/wasp issue. I had the same issue on my two columnar aspen trees last summer as well.
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I think/assume you can spray for aphids. And the only reason the wasps showed up was because we had an aphid problem. Proactively I bought a fake wasp nest that I'm going to hang which might also help keeping the wasps away.