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On the topic of squash bugs, I've been researching an idea I had about painting plant stems to prevent vine borers on squash plants and crawling insects on tomato stems. I have so many plants this year that I can kill off a few with incorrect whitewash recipes in order to find something that doesn't kill the plants, but helps prevent the pests.
While I was researching, it seems this is a really old idea and there's some seemingly good info in old books. Here's a couple pages I found via google books. I actually have a lot of lime and high grade clay for pottery...