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Pea weevils on pea seeds.
Pests in your pea garden, left unchecked, can damage and destroy your precious pea plants. Fortunately, peas have few enemies. Keeping a close watch on your plants during regular daily inspections will help you spot any pests before they can do irreparable harm.
Spot the symptoms of pea plant pests
Check leaves, stems, and fruit for these symptoms that come from pests on the prowl!
On Pea Leaves and Stems
| Symptom | Pest |
| Torn or chewed stem | Cutworm (usually occurs early in the season) |
| Curling, stunting | Aphids |
| Notches in plant leaves | Pea weevils |
| Yellowing, curling leaves | Aphids |
| Webs on bottom of leaves | Spider mites |
| Tunnels or crooked patterns in leaves | Leaf miners |
| Decimated leaves, stems | Armyworms |
| Honeydew (white, sticky residue) | Aphids |
On Pea Fruit
| Symptom | Pest |
| Holes in fruit | Pea weevils |
| Stunted fruit | Aphids |
| Decimated fruit, plant | Armyworms |
How to treat pests on pea plants
Here are some proven ways to get rid of pests on your pea plants. Choose the best treatment for the type of pests invading your plants.
- Pick off the pests. Use your garden gloves to remove the pests by hand. After removal, destroy pests by drowning them in a bucket of soapy water or crushing them with your foot. Handpicking isn’t efficient or practical for very small pests, but works well with larger pests such as the armyworms and cutworms.
- Apply insecticidal soap. Insecticidal soap is organic. The potassium salts in insecticidal soap help remove an insect’s protective waxes, causing destruction of insect membranes and killing them. Insecticidal soaps are particularly effective on smaller pests such as aphids and spider mites. Mix the soap with water to create your solution, and apply directly to insects on any plants. While insecticidal soap is less apt to affect other organisms, certain plants might be sensitive to the soap and can suffer leaf burn.
- Apply horticultural oils. Combine plant- or petroleum-based oils with water to produce horticultural sprays. Neem oil, for instance, is derived from seed extracts of the neem plant. Oil-based sprays block an insect’s air holes, interfere with an insect’s metabolism, disrupt insect feeding, and inhibit insect growth. Like insecticidal soaps, horticultural oils can cause plant injury if not properly diluted.
- Make your own pest spray. As noted elsewhere in this collection, you can make your own pest spray with benign materials. Mix one tablespoon of baking soda, 1/2 teaspoon of a mild dish detergent, and 2 1/2 tablespoons of olive oil in a gallon of water to make a solution that will repel all kinds of bugs, as well as a fungicide for blight and mildew on the pea plant leaves. Shake it well in your bottle before spraying and repeat every week for it to be continuously effective.
Do pests attack your pea plants every year? How do you handle removing them—and even preventing them in the first place? Please tell us how you treat your pea plants to avoid pests.
