How to Stop Cutworms on Tomato Plants

Tomatoes are an incredibly popular addition to any garden, but they are vulnerable to a variety of pests, including cutworms. Cutworms are small, caterpillar-like insects that can quickly devastate your tomato plants by cutting through the stems at soil level. Fortunately, there are several methods you can use to protect your tomato plants from cutworms.

Identifying Cutworms

The first step in protecting your tomato plants from cutworms is identifying the insects. Cutworms are typically brown or gray and about 1-2 inches in length. They are most active at night and can be found curled up in the soil during the day. You may also notice small holes in the leaves and stems of your tomato plants.

Preventive Measures

One of the best ways to stop cutworms from damaging your tomato plants is to take preventative measures. One method is to wrap the stems of your tomato plants in a layer of aluminum foil or paper collars. This will create a barrier that cutworms will find difficult to penetrate.

Another preventative measure is to keep the soil around your tomato plants free from debris and weeds. This will eliminate hiding places for cutworms and reduce the possibility of an infestation.

Natural Remedies

If you prefer to use natural remedies to stop cutworms on your tomato plants, there are several options available. One method is to sprinkle diatomaceous earth around the base of your plants. This substance is made from the fossilized remains of tiny aquatic organisms and will dehydrate the cutworms, causing them to die.

Another option is to plant companion plants that repel cutworms around your tomato plants. Some examples of plants that are known to deter cutworms include marigolds, tansy, and wormwood. These plants release chemicals that make the soil and surrounding area less attractive to cutworms.

Pesticides

If you have a severe cutworm infestation, you may need to resort to pesticides. When choosing a pesticide, it is important to select one that is safe for use on tomato plants and will not harm beneficial insects such as bees or butterflies.

Bacillus thuringiensis (Bt) is a natural pesticide that is effective at controlling cutworms. It works by releasing toxins that target the digestive system of the cutworms, causing them to stop feeding and eventually die.

Always read the label carefully and follow instructions when using pesticides. Wear gloves and protective clothing to avoid contact with the chemicals.

Conclusion

Cutworms can quickly destroy your tomato plants, but with the right preventative measures and remedies, you can keep them at bay. From wrapping the stems in aluminum foil to planting companion plants, there are many methods available for protecting your tomato plants from cutworms. And if all else fails, natural or synthetic pesticides can be used as a last resort. By taking action early and regularly monitoring your plants, you can ensure a healthy and thriving tomato harvest.