Can I eat yellowing spring onions?

If the yellowing is caused by age or minor stress, the green parts are still fine to eat. If the plant is mushy or has fungal spots, it is best to discard it.

How often should I water?

Aim to water every 2 to 4 days. Keep the soil evenly moist to ensure the best flavor and texture.

Welsh onion: yellow leaves, causes and fixes

Check these first

Feel the soil moisture with your finger.
Inspect the base of the plant for mushy tissue.
Look for spots on the leaves.

Likely causes

Overwatering
Most likely
How to tell: The soil feels soggy and the base of the onion looks mushy or soft.
What to do: Stop watering immediately and let the top inch of soil dry out. Ensure your garden bed has good drainage so water does not pool around the roots.
Downy Mildew
Possible
How to tell: You see purplish spots on the leaves followed by yellowing and dieback.
What to do: Remove the affected leaves right away to stop the spread. Improve air circulation by thinning out your plants and avoid watering from overhead.

Yellow leaves on other plants

Find out what's wrong with your welsh onion

The list above covers the usual causes. Pocket Botanist looks at a photo of your actual plant and tells you the likely cause, how serious it is, and what to try first. Identification and a health check are free.

When to worry

If the yellowing spreads rapidly across the whole patch, it is likely a fungal infection that needs immediate attention. A single yellow leaf at the base is often just normal aging.

Stopping it coming back

Water at the base of the plant rather than over the leaves and keep the soil consistently moist but never waterlogged.

Welsh onion: yellow leaves? Check yours with a photo

Every plant is a little different. Take a photo of your welsh onion and Pocket Botanist tells you which cause is most likely, how serious it is, and what to try first. A few checks a day are free. Save the plant and you get care reminders timed for it.

Get the app · Or check it from a photo now, free

Questions people ask

Can I eat yellowing spring onions?: If the yellowing is caused by age or minor stress, the green parts are still fine to eat. If the plant is mushy or has fungal spots, it is best to discard it.
How often should I water?: Aim to water every 2 to 4 days. Keep the soil evenly moist to ensure the best flavor and texture.

Guides to these causes

Downy Mildew

Why are my spring onion leaves turning yellow?

Check these first

Not sure what's wrong with your welsh onion?