Question From: C. Zuckerman - New York, New York, United States
Q: I have 10 outside window boxes. Normally I plant them with geraniums and petunias. Enter the tobacco budworm, which have appeared this summer for the first time. I understand that these pests can survive winter in the soil as pupae. What can I do to prevent future infestations? Replace all the soil? Other measures?
Claire, According to my research these larvae will not survive in soil that freezes. Your window boxes may be micro-climates so removing the soil and and overwintering it in a shaded area where it will freeze may be a smart move. I would add some good quality compost to the mix when replacing it in spring. Best and Happy Yardening, Nancy.