- And tomatoes, too, but in a chemical way.
I found this in the Mother Earth News magazine -
"When tomato hornworms begin feeding on tomato leaves, the tomatoes do two things -- they change their leaf chemistry so they become a less nutritious food, and they release volatile chemicals that attract natural enemies of hornworms. *In tomato and many other plants, these volatile chemicals include jasmonic acid, a natural plant hormone that works like a dinner bell to beneficials such as braconid wasps, which are major parasites of tomato hornworms." *It goes on to say that it's been found "that the same 'signaling pathway' decreases feeding by spider mites on tomatoes; other researchers have found that jasmonic acid even attracts carvivorous mites, which then feed on the pest spider mites."
Fascinating stuff, that plants can 'take care of themselves,' eh?