Should I cut off the yellow leaves?

Yes, you can snip them off with clean scissors to keep the plant looking tidy and prevent potential rot.

Can too much sun cause yellowing?

Usually, too much sun causes bleaching or browning, not yellowing. If the plant is in full sun, ensure it has enough water.

Corn speedwell: yellow leaves, causes and fixes

Check these first

Feel the top inch of soil for dampness.
Inspect the base of the plant for standing water.
Look for signs of pests on the underside of the leaves.

Likely causes

Overwatering
Most likely
How to tell: The lower leaves turn yellow and feel soft or mushy to the touch.
What to do: Stop watering immediately and let the top 2 inches of soil dry out completely. Ensure your pot has drainage holes so extra water can escape.
Nutrient deficiency
Possible
How to tell: Leaves turn a pale yellow while the veins remain green, often starting on older growth.
What to do: Apply a balanced liquid fertilizer diluted to half strength. Do this once every 4 weeks during the active growing season.

Yellow leaves on other plants

Find out what's wrong with your corn speedwell

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

Worry if the yellowing spreads rapidly across the whole plant. A single yellow leaf at the base is often just part of the natural aging process.

Stopping it coming back

Stick to a consistent watering schedule and only water when the top inch of soil is dry.

Corn speedwell: yellow leaves? Check yours with a photo

Every plant is a little different. Take a photo of your corn speedwell 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

Should I cut off the yellow leaves?: Yes, you can snip them off with clean scissors to keep the plant looking tidy and prevent potential rot.
Can too much sun cause yellowing?: Usually, too much sun causes bleaching or browning, not yellowing. If the plant is in full sun, ensure it has enough water.

Why are my corn speedwell leaves turning yellow?