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QUESTION: Tomato Hornworms

comments (1) March 2nd, 2010

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cleokitty cleokitty, member
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Photo by naturegirl 78 under the Creative Commons Attribution License 2.0.Click To Enlarge

Photo by naturegirl 78 under the Creative Commons Attribution License 2.0.


How do I prevent tomato green horned caterpillars from ruining my tomato plants?


posted in: hornworm

Comments (1)

ChrisMcLaughlin writes: Really, the best way is to hand-pick them off the plants and toss 'em. Or you could try spraying some Bt ( Bacillus thuringiensis) which is a bacteria that basically paralyzes some insect larvae like the tomato hornworm. It's organic an non-toxic to mammals or beneficial insects.

If you ever see a tomato hornworm covered in white eggs, don't kill the hornworm. Those eggs belong to a parasitic wasp. When the wasps hatch, they'll kill their worm host plus go off to find others like it in the garden.

Just in case you miss a hornworm or two, let me show you what they turn into as adults. It may surprise you. http://www.examiner.com/x-2981-SF-Wildlife-Examiner~y2009m3d7-Sphinx-moths-wear-a-hummingbird-disguise
Posted: 9:45 pm on March 9th
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