Can I save a plant with root rot?

If the rot is caught early and the roots are still firm, you can save it by improving drainage. If the roots are black and mushy, the plant likely cannot be saved.

Does too much sun cause yellowing?

Yes, intense afternoon sun can bleach leaves, making them look pale or yellow. Providing partial shade during the hottest part of the day helps.

Oregon Grape: yellow leaves, causes and fixes

Check these first

Feel the soil moisture two inches deep.
Check the base of the plant for standing water.
Inspect the roots for signs of decay.

Likely causes

Root rot
Most likely
How to tell: The leaves turn yellow and the plant looks wilted even when the soil is wet. You might notice a musty smell coming from the dirt.
What to do: Stop watering immediately and check the roots for mushy, dark sections. If the rot is minor, improve drainage by adding organic matter or moving the plant to a spot with better soil structure.
Nutrient deficiency
Possible
How to tell: Leaves lose their deep green color and turn a pale yellow, often starting with the older growth. This happens if the soil is depleted of minerals.
What to do: Apply a balanced, slow release fertilizer in early spring. Follow the package instructions for the size of your shrub.

Yellow leaves on other plants

Find out what's wrong with your oregon grape

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 entire plant, it is likely a serious root issue. It is normal for a few older, inner leaves to yellow and drop in late summer.

Stopping it coming back

Ensure your Oregon grape is planted in well draining soil and avoid overwatering once the shrub is established.

Oregon Grape: yellow leaves? Check yours with a photo

Every plant is a little different. Take a photo of your oregon grape 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 save a plant with root rot?: If the rot is caught early and the roots are still firm, you can save it by improving drainage. If the roots are black and mushy, the plant likely cannot be saved.
Does too much sun cause yellowing?: Yes, intense afternoon sun can bleach leaves, making them look pale or yellow. Providing partial shade during the hottest part of the day helps.

Guides to these causes

Root Rot

Why are my Oregon grape leaves turning yellow?

Check these first

Not sure what's wrong with your oregon grape?