Will aphids kill my pea plants?

If left unchecked, they can weaken the plant and spread viruses. Regular monitoring keeps them from reaching levels that kill the plant.

Can I use dish soap to kill aphids?

You can use a very mild solution of water and a few drops of plain dish soap. Avoid using soaps with degreasers or heavy fragrances.

Why are there bugs on my garden peas?

Check these first

Inspect the tips of the vines for clusters of tiny bugs.
Check the undersides of leaves for sticky residue.
Look for ants, which often farm aphids on plants.

Likely causes

Aphid infestation
Most likely
How to tell: You see small green or pink insects huddled on the stems and undersides of leaves. They often leave behind a sticky residue called honeydew.
What to do: Spray the plants with a strong stream of water from your hose to knock the aphids off. For heavier infestations, apply insecticidal soap or neem oil in the early morning.
Poor air circulation
Possible
How to tell: The plants are crowded together, creating a humid environment that attracts pests and disease. Stems look weak and growth is slow.
What to do: Thin out your pea plants to ensure at least 3 to 4 inches of space between them. This allows air to move freely and makes the plant less attractive to pests.

When to worry

A few aphids are manageable, but you should act if you see large colonies covering the stems. If the plant stops growing or leaves start curling, it is time to treat them.

Stopping it coming back

Plant peas in full sun with proper spacing to keep them vigorous and less prone to pest attacks.

Not sure which one it is? Photograph your pea.

This page lists the usual causes. Pocket Botanist looks at your actual leaf and tells you the likely cause, how serious it is, and what to try first. Identification and a health check are free.

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Questions people ask

Will aphids kill my pea plants?: If left unchecked, they can weaken the plant and spread viruses. Regular monitoring keeps them from reaching levels that kill the plant.
Can I use dish soap to kill aphids?: You can use a very mild solution of water and a few drops of plain dish soap. Avoid using soaps with degreasers or heavy fragrances.