Hi. I live in Boston. I just got back from being away for a month, leaving others in charge of the garden, and found my nasturtium--and ONLY my nasturtium--infested with something or other. The mama bug, I think, is about a eighth-quarter inch long, black, with little orange spots. The babies (if they are her babies) are black oval specks. They are EVERYWHERE, but ONLY on the nasturium, and they are of course killing it--the leaves are turning a horrible yellow. I THINK, but am not sure, that ants are eating the bugs, but not nearly enough. Any ideas? Thanks, Felicia