FleaBeetles.com is supported by readers and may earn an affiliate commission.

Rather have a pro do it for you?

How to get rid of flea beetles on brassicas

Say Goodbye to Flea Beetles on Your Brassicas with These Simple Tips

Flea beetles are small, black or brown insects that jump like fleas and feed on the leaves of brassicas, such as broccoli, cabbage, and kale. They can cause significant damage to the plants, so it's important to get rid of them as soon as possible. Here's a step-by-step guide on how to do it:

1. Identify the flea beetles: The first step is to make sure that the insects you're dealing with are indeed flea beetles. Look for small, round holes in the leaves of your brassicas and check for small, jumping insects on the plants. Flea beetles are most active in the early morning and late afternoon.

2. Remove infected plants: If the infestation is severe, it may be best to remove the infected plants altogether. This will prevent the beetles from spreading to other plants in your garden.

3. Use row covers: Row covers are an effective way to prevent flea beetles from attacking your brassicas. Cover your plants with a lightweight fabric that allows light and water to pass through but keeps the beetles out. Be sure to secure the edges of the cover to the ground to prevent the beetles from crawling underneath.

4. Apply diatomaceous earth: Diatomaceous earth is a natural powder made from the fossilized remains of tiny aquatic organisms. It works by dehydrating the flea beetles when they come into contact with it. Sprinkle the powder on the leaves of your brassicas, being sure to cover both the tops and bottoms of the leaves.

5. Use insecticidal soap: Insecticidal soap is a safe and effective way to get rid of flea beetles. Spray the soap directly on the leaves of your brassicas, being sure to cover both the tops and bottoms of the leaves. Repeat the process every 7-10 days until the infestation is under control.

6. Introduce natural predators: Ladybugs and lacewings are natural predators of flea beetles. Introduce these beneficial insects into your garden to help control the flea beetle population. You can purchase them online or at your local garden center.

By following these steps, you can effectively get rid of flea beetles on your brassicas and protect your plants from further damage. Remember to monitor your plants regularly and take action as soon as you notice an infestation.

Katchy Indoor Insect Trap

Check Price
Lemongrass Flea & Tick Spray f...

Check Price
Max Defense Bed Bug, Flea and ...

Check Price
Diatomaceous Earth Insect Killer

Check Price