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Larry from Huntley, Illinois writes

What may be causing my weeping pussy willow to be full of black & white bees/wasps that make a waxy film?

what is the best product to get rid of these pests. mowing the lawn around the tree is an adventure.

Answer:

You may have gall wasps in the tree, which can be treated with Sevin Concentrate. You would also need to trim infested branches and discard or burn clippings to avoid spreading the problem. We would suggest consulting a local arborist or Master Gardener in your area for better identification and recommendations for treatment.

Answer last updated on: 07/28/2016

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