Is powdery mildew harmful to eat?

The fungus itself is not toxic, but it ruins the flavor and health of the plant. It is best to avoid eating heavily infected pods.

Does sun help with white spots?

Yes, full sun helps keep the leaves dry and discourages fungal growth. Ensure your peas get at least 6 to 8 hours of direct sunlight daily.

Why are there white spots on my garden pea leaves?

Check these first

Rub the white spot to see if it wipes off like dust.
Check if the spots are appearing on older leaves first.
Observe if the plants are crowded or lack airflow.

Likely causes

Powdery mildew
Most likely
How to tell: Leaves look like they have been dusted with flour or talcum powder. The spots eventually spread to cover the entire leaf surface.
What to do: Remove the most heavily infected leaves to reduce the spread of spores. Spray the remaining foliage with a mixture of 1 tablespoon of baking soda in 1 gallon of water.
High humidity
Possible
How to tell: The air is stagnant and the leaves stay wet for too long after watering. Fungal growth appears rapidly across the patch.
What to do: Water only at the base of the plant to keep the leaves dry. Ensure your garden has good airflow by thinning out dense foliage.

When to worry

Powdery mildew is common at the end of the season as plants age. It is only a major concern if it appears early and prevents the plant from producing pods.

Stopping it coming back

Water at the base of the plant and provide plenty of space for air to circulate between vines.

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.

Get the app

Questions people ask

Is powdery mildew harmful to eat?: The fungus itself is not toxic, but it ruins the flavor and health of the plant. It is best to avoid eating heavily infected pods.
Does sun help with white spots?: Yes, full sun helps keep the leaves dry and discourages fungal growth. Ensure your peas get at least 6 to 8 hours of direct sunlight daily.