Will yellow leaves turn green again?

Usually no. Once a leaf has turned yellow, it will likely stay that way or eventually die off.

Does crabgrass need a lot of fertilizer?

It is a vigorous grower, but it does not need heavy feeding. A little fertilizer helps if your soil is very depleted.

Large crabgrass: yellow leaves, causes and fixes

Check these first

Check the soil moisture level with your finger.
Inspect the base of the plant for signs of standing water.
Look for any signs of pests on the underside of the leaves.

Likely causes

Overwatering
Most likely
How to tell: The soil feels constantly muddy and the leaves look pale or limp. Roots may start to smell sour.
What to do: Hold off on watering until the top inch of soil feels dry to the touch. Ensure your planting site has good drainage to prevent water from pooling around the roots.
Nitrogen deficiency
Possible
How to tell: Older leaves turn yellow while the plant looks stunted overall. This often happens in poor, sandy soils.
What to do: Apply a balanced, nitrogen rich fertilizer according to the package instructions. A light application can help green up the foliage within a week or two.

Yellow leaves on other plants

Find out what's wrong with your large crabgrass

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

It is normal for the very oldest bottom leaves to yellow as the plant matures. Worry if the yellowing spreads rapidly to the newer growth at the top.

Stopping it coming back

Maintain consistent watering and avoid letting the soil become waterlogged.

Large crabgrass: yellow leaves? Check yours with a photo

Every plant is a little different. Take a photo of your large crabgrass 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

Will yellow leaves turn green again?: Usually no. Once a leaf has turned yellow, it will likely stay that way or eventually die off.
Does crabgrass need a lot of fertilizer?: It is a vigorous grower, but it does not need heavy feeding. A little fertilizer helps if your soil is very depleted.

Why are my large crabgrass leaves turning yellow?