Wasps around your trees?

Even though it's late in the season, we're still getting a lot of questions about wasps swarming trees—especially aspen trees and some evergreens.

Most visitors asks which insecticides are best for getting rid of wasps, and, yes, our line of Dr Doom insecticides will do the trick. But the wasps are not actually the problem: aphids are.

Aphids are insects which suck on the leaves of trees to get to the protein inside. They're messy pests and leave a sticky, sugary mess of "honeydew" on the outside of the leaves they siphon. The wasps, in turn, are attracted to this soda pop sweet honeydew, and start swarming the trees.

To complicate matters even further, ants will sometimes "farm" aphids and move them around from branch to branch or from tree to tree.

Many other stores will be happy to recommend wasp insecticide right off the bat, and it will fix the problem temporarily... until new wasps move in. But to really fix the problem, you need to treat the aphids.

So whenever somebody comes into our greenhouse complaining of wasps, we always ask them a few more questions to find out if the issue is really wasps or if they're just a a side-effect of a larger aphid issue.