I use diatomaceous earth (food grade). I saw a couple of beetles this year, and just sprinkled DE on the leaves, after picking off the bugs. I haven't seen any in 3 weeks. Works on aphids on roses too. Reply
I use diatomaceous earth (food grade). I saw a couple of beetles this year, and just sprinkled DE on the leaves, after picking off the bugs. I haven't seen any in 3 weeks. Works on aphids on roses too.