What are these??

Asked October 24, 2016, 10:04 PM EDT

Hi, I have a new garden planted in May of this year. The Anise Hysop have these bugs all over the stems. The foliage doesn't look terribly good but I assumed that was because this is that time of year. I didn't see any bugs on the leaves themselves - just the stems. Should I leave them alone? Treat? and if so with what? I'd prefer organics. Any advice? Also, do I cut this plant down in a few weeks, or wait until beginning of Spring?

Montgomery County Maryland

1 Response

Not all varieties of anise hyssop (Agastache) are winter-hardy here, though they do well with self-seeding from year to year.
These plants will die back with heavy frost, and you can either cut them back in fall or late winter/early spring.
The pest you have there is a type of aphid, which is a sucking insect.
Given how close we are to frost, you could cut these to the ground and bag them up for disposal right now.
A 2-3 inch layer of mulch in your garden will help with winter protection.