The Q&A Archives: Tri-coloured Beech Tree - pests

Question: My tri-coloured beech was attacked by aphids before the buds opened this year. Next there was a small grey caterpillar enjoying its leaves. I've been using Safer's Soap spray to control and haven't had a reappearance of the pests. But the tree looks ravaged. What can I do to avoid this next spring (should it survive)?

Answer: It may be that you won't have to repeat your control tactics next spring. But, if you do, Safer's Insecticidal Soap will take care of the aphids. As for the caterpillars, Bt (Bacillus Thuringensis) is a botanical that poisons caterpillars but doesn't affect other critters. Best wishes with your garden!

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