Does my crape myrtle need more fertilizer?

Only if a soil test confirms a deficiency. Over-fertilizing can actually cause more harm than good.

Is yellowing a sign of a disease?

Rarely, unless it is accompanied by spots or fungal growth. Focus on water and soil health first.

Crape myrtle: yellow leaves, causes and fixes

Check these first

Check the soil moisture level with your finger.
Inspect the drainage around the base of the plant.
Examine the leaves to see if the veins are still green.

Likely causes

Improper Watering
Most likely
How to tell: The leaves turn yellow and may drop prematurely due to waterlogged roots or severe drought. The soil feels either constantly soggy or bone dry.
What to do: Adjust your watering to every 7 to 14 days, ensuring the top few inches of soil dry out between waterings. Make sure the planting site has good drainage to prevent standing water.
Nutrient Deficiency
Possible
How to tell: The leaves turn yellow while the veins remain green, often indicating an iron or magnesium deficiency. This usually happens in soil with an incorrect pH level.
What to do: Test your soil pH to ensure it is slightly acidic to neutral. Apply a balanced fertilizer formulated for trees and shrubs to provide necessary micronutrients.

Yellow leaves on other plants

Find out what's wrong with your crape myrtle

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 or if the leaves start falling off in large numbers. It is normal for a few older leaves to yellow and drop in late summer or autumn.

Stopping it coming back

Maintain a consistent watering schedule and avoid overwatering. Mulching helps keep soil moisture stable and prevents nutrient runoff.

Crape myrtle: yellow leaves? Check yours with a photo

Every plant is a little different. Take a photo of your crape myrtle 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

Does my crape myrtle need more fertilizer?: Only if a soil test confirms a deficiency. Over-fertilizing can actually cause more harm than good.
Is yellowing a sign of a disease?: Rarely, unless it is accompanied by spots or fungal growth. Focus on water and soil health first.

Why are my crape myrtle's leaves turning yellow?