> Another aphid question: Do they come in various colors? Yes. There are many species of aphids. Some are green, some are yellowish, some are black, some look silvery, etc. If you are lucky enough to see a lot of relatively spherical-looking, tan-colored aphids with a little hole cut in the back of each one (and those aphids are hard [and dry], not soft), this means you have a bunch of aphid-predator wasps around, and if so you shouldn't spray anything at all to kill the aphids -- you want to encourage as mush as possible the population explosion of that predatory wasp, and especially, you don't want to kill any of them. Once these predatory wasps are around in force, they clean up aphid problems very rapidly. --- Brent