Tri-coloured Beech Tree - pests - Knowledgebase Question

Sharon, ON
Avatar for wilston
Question by wilston
July 5, 2005
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 from NGA
July 5, 2005
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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