I have been getting these spots here and there for a long time. Bt didn't seem to help much, now I'm trying Spinosad and pyrethrin. What do you guys think, what kind of bug leaves little spots like that? Every time I look at the leaves I never find bugs.
Could be spider mites....that would be my first guess. Have you looked under the leaves with a magnifying glass? I'm not an expert, but that is where I would start..and if it is mites you had better get it under control NOW as opposed to later.
Doesn't look like any bug damage I've seen plus you haven't seen any if it was spider mites you would of seen them for that amount of spots. Have you misted you're plant with anything