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, To prevent a future infestation, thoroughly till your garden soil at the beginning and end of the growing season to kill any larvae.Tomato hornworm larva. You can also spray your plants with an insecticidal soap to kill any tomato worms on them. Bt is an organic pesticide that’s safe for plants and other animals but kills larval insects when it’s ingested. Applying Bacillus thuringiensis, or Bt, to your infested plants will kill tomato worms as well. These insects feed on tomato worms and their eggs. Introducing wasps, ladybugs, or green lacewings to your garden can also help control the tomato worm population. You can also spray your plants with a hose to knock off and drown small tomato worms. Check both sides of the leaves on your plants and along the ground to make sure you’re catching them all. If you have a small garden, handpick the tomato worms off of your plants and drop them into a bucket of soapy water to kill them. Tomato worms can quickly take a toll on your vegetable garden, but fortunately they’re easy to control using a few different strategies.
Plant Nursery & Garden Shop Expert Interview. It will kill insects and worms if they come into contact with the fine dust.
X Trustworthy Source National Pesticide Information Center Organization run by Oregon State University providing objective, science-based information about pests and pesticides Go to source This insecticide is effective on tomato worms and pests such as spiders mites, mosquitoes, and ants.
These organic insecticides are safer for human consumption than other inorganic compounds. Pyrethrins are derived from the Chrysanthemum flower and are used to control fleas, flies, moths, ants and other pests.Bt also kills cabbage worms, cabbage loopers, cutworms, and other harmful caterpillars. Botanical Bt (Bacillus Thuringiensis) is an organic insecticide that acts as a stomach poison and will not harm other plants or animals.Be careful in choosing as some may be harmful to beneficial insects. There are many options of insecticide to pick from and the choices may seem daunting.
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