Will Cabbage Worms Eat Tomato Plants?

Tomato plants are a favorite in many gardens due to their versatility, delicious fruits, and striking appearance. But along with the many benefits of growing tomato plants, come a few challenges too. Among these challenges is the problem of pests, with one such notorious pest being the cabbage worm.

What are Cabbage Worms?

Cabbage worms (Pieris rapae) are the larval stage of the small, white butterflies that flit around in gardens in the summertime. They get their name from their preferred food source: cabbage family plants, which include broccoli, cauliflower, and, of course, cabbage. However, while they usually stick to this family, they've been known to eat other vegetable plants too, including tomato plants.

How Do Cabbage Worms Damage Tomato Plants?

Cabbage worms are voracious eaters and are capable of munching through entire leaves and stems, leaving behind large holes and ragged edges. This can weaken the tomato plant, making it more susceptible to diseases and other pests, and can also reduce its ability to photosynthesize and produce fruit.

How to Identify Cabbage Worms on Tomato Plants

If you suspect you have cabbage worms on your tomato plant, there are several signs to look out for. One is the presence of the small, white butterflies that lay the eggs on the plant. Another is the appearance of small, yellow eggs on the underside of the leaves. Finally, if you see holes in your tomato plant leaves or notice that leaves are being eaten, this could indicate the presence of cabbage worms.

How to Prevent and Control Cabbage Worms on Tomato Plants

One way to prevent cabbage worms from attacking your tomato plants is to companion plant them with herbs like mint or basil. These herbs are known to repel cabbage worms and other pests. Another option is to use organic insecticides, which are safe for humans and the environment, to control these pests. Bacillus thuringiensis (Bt) is a popular organic insecticide that specifically targets cabbage worms while being harmless to other insects. You can also use neem oil or insecticidal soap to treat the plant, but these may need to be reapplied, so be sure to read the instructions carefully.

Conclusion

While cabbage worms typically prefer cabbage family plants, they have been known to eat tomato plants too. These pests can cause significant damage to the plant, which can affect its growth and fruit production. Nevertheless, by learning how to identify the signs of cabbage worm infestation and employing preventative measures, you can keep your tomato plant safe from these pests and reap a bountiful harvest.