May I add that just because you see bugs on your plant doesn't mean they are "attacking" the plant. They may be eating whatever is causing the honeydew secretions that are also causing the sooty mold. That is, they might be beneficial insects. Or they are eating the honeydew. So please don't break out some chemical insecticide, especially on plants that produce something you want to eat.
I'll jump on the bandwagon to say - give those plants a thorough hosing off, first to see if that solves the problem. Be sure to direct the spray up under the leaves to dislodge the smart ones that shelter underneath there.
It will also help us a lot to ID your various bugs if you could please tell us where you are? Fill in your personal profile - the little person icon in the blue sidebar at left - to include your city/state/country. Just a zone doesn't tell us nearly enough.
