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Tomato hornworms, Manduca quinquemaculata, are large green caterpillars that devour tomato plants along with other nightshades including peppers, potatoes, and eggplant. They can also be a little ...

Q: What kinds of caterpillars should I be controlling now? I know they will start becoming a problem soon. A: The principal insect that infests many vegetables in the tomato family, as well as grapes, ...

Vegetable gardeners everywhere look forward to harvesting tomatoes each summer. But one pest that can ruin the fruits of your labor (literally) is the tomato hornworm. The caterpillars feast on the ...

I saw your recent column about tomato fruitworms, and was wondering if this pest also eats leaves. The leaves of one of my tomato plants are being eaten by something. A couple of the branches now have ...

A reader of our column from Ashland dropped me an email about these huge green worms in her garden a number of years ago and wondered what she could do about them. She pulled five off her plants and ...

Let’s play Clue….no, not the board game. This is Garden Clue. Clue No. 1: Dark green to black-colored pellets on the ground and on some leaves of tomato. Clue No. 2: Tips of tomato stems are ...

Have you ever gone out to your tomato patch in the morning to find a plant that consists only of stalk and leaf veins? If you have, then you are probably familiar with tomato hornworm. This voracious ...

Ah, summer in Iowa! For the home gardener it is the best of times and the worst of times - sorry Charles Dickens. My coneflowers, dill and tropical milkweed are all in bloom and beginning to attract a ...