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Published on Mar 19, 2013
Watch the full-length episode at http://video.pbs.org/video/2338524490/ (US Only) To protect against herbivores the wild tobacco plant deposits trichomes, sweet treats irresistible to but also potentially fatal for leaf-eating caterpillars. Shortly after ingesting the trichomes, the insect releases a particular odor that attracts ground-foraging predators. "What Plants Talk About" premieres Wednesday, April 3 at 8/7c on PBS (check local listings). http://www.pbs.org/wnet/nature/episod...