How to Get Rid of Caterpillars on Catnip Plant

Catnip is a beloved herb that many cat owners grow in their gardens for their feline friends. However, catnip plants are not only attractive to cats but also to caterpillars who munch on the leaves and can cause damage to the plant. If you notice caterpillars on your catnip plant, here are some ways to get rid of them.

Identify the Type of Caterpillar

The first step in getting rid of caterpillars on your catnip plant is to identify the type of caterpillar. There are many species of caterpillars, and not all of them are harmful to your plant. Some caterpillars, such as the monarch caterpillar, are beneficial for pollination and should be left alone.

One way to identify harmful caterpillars is by their color and markings. Some common caterpillars that feed on catnip plants include cabbage loopers, corn earworms, and cutworms. Cabbage loopers are light green with white stripes along their backs. Corn earworms are yellowish-brown with darker stripes and spots. Cutworms are brown or gray and curl up when disturbed.

Natural Methods to Get Rid of Caterpillars

If you want to get rid of caterpillars on your catnip plant without using chemicals, there are several natural methods you can try.

Handpicking

The most straightforward method for getting rid of caterpillars is to handpick them off your plant. Wear gloves and inspect every leaf for any signs of caterpillar damage. Pick off any caterpillars you find and dispose of them in a bucket of soapy water or by squishing them.

Neem Oil

Neem oil is a natural insecticide that can help get rid of caterpillars on your catnip plant. Mix 1 tablespoon of neem oil with 1 gallon of water and spray the solution on your plant, focusing on the leaves. Repeat this process every few days until you no longer see any caterpillars.

Diatomaceous Earth

Diatomaceous earth is a powdery substance made from the fossilized remains of diatoms. It is safe for humans and pets but is deadly to insects. Sprinkle diatomaceous earth around the base of your catnip plant and on the leaves. The powder will stick to the caterpillars and dehydrate them, causing them to die.

Companion Planting

Companion planting is a natural method that involves planting certain plants together to repel or attract insects. Planting marigolds near your catnip plant can help repel caterpillars and other insects.

Chemical Methods to Get Rid of Caterpillars

If natural methods do not work, or you have a severe infestation, you may need to use chemical methods to get rid of caterpillars on your catnip plant. However, be careful when using chemicals as they can harm beneficial insects and pollinators.

Insecticidal Soap

Insecticidal soap is a natural pesticide made from potassium salts and fatty acids. It is safe for humans and pets but can be harmful to beneficial insects if used excessively. Mix 2 tablespoons of insecticidal soap with 1 gallon of water and spray the solution on your catnip plant, focusing on the leaves where you see the caterpillars.

Bacillus Thuringiensis

Bacillus thuringiensis (BT) is a naturally occurring bacteria that kills caterpillars by producing a toxin that paralyzes their digestive system. Mix BT with water according to the instructions on the package and spray it on your catnip plant. BT only affects caterpillars and is safe for humans, pets, and beneficial insects.

FAQ

Can I still use my catnip plant if it has caterpillars on it?

Yes, you can still use your catnip plant even if it has caterpillars on it. However, make sure to wash the leaves thoroughly before giving them to your cat or using them in cooking.

Are there any other plants that caterpillars like?

Yes, caterpillars like many different plants. Some common plants that caterpillars feed on include broccoli, cauliflower, kale, and cabbage.

How can I prevent caterpillars from coming back?

To prevent caterpillars from coming back, make sure to keep your garden clean and free of debris. Remove any dead leaves or plants that may attract insects. You can also try companion planting with plants that repel insects such as garlic or chives.