Aphid infestation in very large linden trees

Asked July 7, 2017, 11:21 AM EDT

I have about a dozen very tall linden trees that are heavily infested with aphids. Their honeydew is everywhere. It's so bad that everything is sticky that we can't use the outside patio and deck areas. I'm wondering if there is anything that can be done systemically to get them u dear control. Thank you!

Washington County Minnesota aphids horticulture

1 Response

Usually aphids don't need management. Systemic pesticides are a highly toxic way to treat what is usually a transient problem. Please consider that the systemics for aphids are neonicontinoids (Imidacloprid and Dinotefuran), which have been associated with honeybee colony collapse. Read here about aphids:
https://www.extension.umn.edu/garden/insects/find/aphids-on-deciduous-trees-and-shrubs/