I noticed some white colored stuff on my hostas and thought it looked like mold or ? So I went to rub it off and they jumped! I don't think it can fly, but just jumps haphazardly. They are really tiny, about the size of an aphid. Bright white and furry looking. We have had lots of rain lately for days. I noticed these on my rhododendrons also. Does anyone know what they are and how can I get rid of them if necessary? I have a feeling they are bad, because they are everywhere! They are absolutely covering my hosta's flower buds. I tried to squash them but they are too fast and tiny and too many.
