Troubleshooting
Mangetout Pea problems — and how to fix them
Mangetout Pea (Pisum sativum var. saccharatum) is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Powdery mildew
White powdery coating on leaves in warm, dry late-season conditions; space plants for airflow, water at the base and grow mildew-resistant cultivars.
Pea moth
Caterpillars tunnel into pods and damage developing peas; time sowings to avoid peak flight, or cover crops with fine mesh during flowering.
Bolting and collapse in heat
Plants stop podding and die back once weather turns hot; sow early for spring crops and again in late summer for autumn, avoiding midsummer.
Mice eating sown seed
Mice dig up and eat pea seeds before germination; start under cover in modules or protect direct sowings until seedlings emerge.
Prevent mangetout pea problems before they start
Most mangetout pea issues are care-mismatch, not bad luck. Dial in the basics:
Looking for mangetout pea in general rather than its problems? Read the full mangetout pea care guide — light, water, soil and feeding.
Mangetout Pea problems — FAQ
Why is my mangetout pea powdery mildew?
White powdery coating on leaves in warm, dry late-season conditions; space plants for airflow, water at the base and grow mildew-resistant cultivars.
Why is my mangetout pea pea moth?
Caterpillars tunnel into pods and damage developing peas; time sowings to avoid peak flight, or cover crops with fine mesh during flowering.
Why is my mangetout pea bolting and collapse in heat?
Plants stop podding and die back once weather turns hot; sow early for spring crops and again in late summer for autumn, avoiding midsummer.
Why is my mangetout pea mice eating sown seed?
Mice dig up and eat pea seeds before germination; start under cover in modules or protect direct sowings until seedlings emerge.