What Kind of Green Worm Eats Tomato Plants?

The Tomato Hornworm

One of the most common green worms that eat tomato plants is the tomato hornworm. This large green caterpillar can grow up to 4 inches long and has a distinctive horn-like protrusion on its rear end. Tomato hornworms feed on the leaves and fruit of tomato plants, and can quickly decimate a plant if left unchecked.

Identification

Tomato hornworms are easily identified by their size and color. They have a bright green body with eight V-shaped markings on each side, and a black or brown horn-like protrusion on their rear end. They also have small black spots on their body, which distinguishes them from other green caterpillars.

Life Cycle

The tomato hornworm undergoes a complete metamorphosis, which means it goes through four distinct stages: egg, larva (caterpillar), pupa, and adult moth. The eggs are laid on the underside of tomato leaves and hatch into tiny larvae that immediately begin feeding on the plant. The larvae go through several instars, or growth stages, and can grow up to 4 inches long before pupating in the soil. The pupa eventually emerges as an adult hawk or sphinx moth, which can lay eggs and start the cycle over again.

Control Methods

There are several ways to control tomato hornworms and prevent them from damaging your tomato plants. One of the most effective methods is handpicking, which involves physically removing the caterpillars from the plant and either squishing them or dropping them into a bowl of soapy water. You can also use organic pesticides, such as Bacillus thuringiensis (BT), which targets the caterpillars without harming other beneficial insects. Lastly, you can try companion planting with herbs like basil, which can repel hornworms and prevent them from laying eggs on your tomato plants.

Conclusion

The tomato hornworm is a common pest that can cause a lot of damage to tomato plants if left unchecked. By understanding its life cycle and identifying it early, you can take steps to control it and protect your tomato crop. Whether you choose to handpick, use organic pesticides, or companion plant with basil, the key is to be vigilant and stay on top of the problem before it gets out of hand.