Family Horticulture Day at West Madison Agri Research / 13Entomology
by Marilyn Sallee
5/14/2011
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Hornworms are usually a bright lime green. This guy's blue hue is due to the special food it eats (beige block), that also makes its frass beige (the pellets in the background). Frass, or bug poop, makes excellent fertilizer in the garden.
