![]() ![]() ![]() Female wasps will actually lay their eggs under the skin of the hornworm and when they hatch, the larvae will eat the hornworm from the inside out. The picture below is a hornworm covered in wasp eggs. Wasps are another beneficial insect to have around the garden for hornworm control as well. Removing them will also be easier at dusk, dawn, and nighttime, when they emerge to feed. This treatment will cause the pests to writhe and move, making them easier to see. They eat the Hawk Moth eggs on the underside of leaves which reduces the hornworm population in the garden. To aid in finding them among the leafy foliage, fill a spray bottle with liberally soapy water or a commercial insecticidal soap, and then spray the plant. Ladybugs are an invaluable insect to welcome into your garden. Other Natural Ways to Reduce Hornworm Problems Promote Beneficial Insects Therefore, it is harmless to beneficial insects in the garden. 4 Steps To Prevent Hornworms On Tomato Plants. ![]() BT is sprayed onto the foliage of plants and only affects insects that eat the leaves. The main organic pesticide that people typically use to control hornworm problems is BT or Bacillus thuringiensis (no affiliation), which is a naturally occurring bacteria that kills hornworms when ingested. If you decide to go this route, make sure to check which pesticides are approved for your area. There are also several organic and inorganic foliar sprays you can use to poison the hornworms when they ingest it. Toss tomato hornworms in soapy water to dispose of them Use Insect Spray ![]()
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