Just that. I’ve grown some herbs from seed on the kitchen windowsill. The coriander isn’t looking too healthy, and when I looked closely the stalks are covered in tiny black bugs. It occurs to me that I notice these if I have a bunch of flowers in the kitchen too. I don’t get them in other rooms and I don’t see them in the kitchen if I don’t have plants. What are they and how do I get rid? They don’t seem to fly.