![]() Full-grown hornworm caterpillars can devour an entire tomato plant in a day or two. When eggs hatch, the hornworms start eating. They look first for tomato plants, but will also attack eggplants, peppers, and potatoes. What do hornworms do?Īdult moths lay eggs on host plants. They each feed on tomatoes and its plant relatives, including eggplants, peppers, and potatoes. The tomato hornworm has a black horn the tobacco hornworm has a red horn. There are a couple of types of hornworms. If you spy these whirring moths hanging in mid-air and sipping nectar from flowers in your garden (usually at dusk or later), you need to keep an eye out for hornworm caterpillars. Hornworm caterpillars are the larvae of the hummingbird (or sphinx) moth, which gets its name from its fast wing speed. But take heart: By following a few prevention tips and taking quick action when hornworms appear, you can keep them from ruining your precious plants. ![]() ![]() They can quickly decimate a tomato patch and will also eat a host of other garden veggies. These destructive pests can grow up to 4 inches long and have distinctive horns on their rear ends. Hornworms: They look as unattractive as their name sounds. Photo credit: Whitney Cranshaw, Colorado State University, ![]()
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