Yellow Jackets On Our Linden Trees - October 2020
For the past two years, I've noticed that some sort of bee1 has been finding a home on our espalier'd Linden trees. There has been A LOT of them. Swarming around the tree, climbing on the leaves, etc. I If you look closely at the photo, you can see some of them. Each tree has dozens of them.
Yellowjacket wasps are attracted to sticky-sugary "honeydew" excreted by aphids on the linden leaves. Aphids are very common on linden tree leaves. Look to see if any linden leaves look shiny wet and sticky; these have had aphid honeydew dripped onto them by aphids on leaves above.Now, that makes sense. When I look at some of the leaves of the tree, they are tattered. Eaten through like lace.
1. [I say "bee" because that's what I call all flying, stinging, yellow and black insects, generally.]↩