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What's the best way to eliminate wasps in a Royal Red Norway maple? There is no visible nest in the tree.
Last Updated: April 22, 2008
Norway maples are very prone to develop large maple aphid infestations. In fall, aphid populations may increase as ladybird beetle (ladybug) predators migrate. Aphids do not completely metabolize sap/fluids sucked from leaves, and they excrete a sticky sugary material called honeydew. Yellow jackets (wasps) are attracted to the sugary honeydew. To reduce the number of yellow jackets, use a trap and spray an insecticide to control aphids on the maple. For more information, go to:
http://www.ext.colostate.edu/pubs/insect/05511.html.
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