My basil & mint have been hit with little black dots everywhere that kill the plant. I have two different C&Gs and both have been hit, though initially, it was just the one. Chives don’t seem to care, but basil and mint won’t flourish. I’ve thrown out all the sick plants—now what? How do I make sure the C&Gs are clean/not harbouring anything, and how do I keep it from coming back?
Pictures here: https://imgur.com/a/kF9e2vi