Check these first
- Flip the leaves over to check for orange spores.
- Check if the yellowing is affecting older or newer leaves.
- Test your soil pH if you suspect a nutrient issue.
Likely causes
Orange Rust
Most likelyHow to tell: The undersides of the leaves are covered in bright orange, powdery spores. This is a systemic disease that will eventually turn the whole plant yellow and stunted.
What to do: There is no cure for orange rust, so you must dig up and destroy the entire infected plant. Do not replant blackberries in that same spot for several years.
Nitrogen Deficiency
PossibleHow to tell: Older leaves turn an even, pale yellow color, including the veins. This usually happens if the soil is low in nutrients.
What to do: Apply a balanced fertilizer in early spring as new growth begins. Adding organic compost around the base of the plant can also help boost soil fertility.
Find out what's wrong with your blackberry
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.
Scan with your phone's camera to get the app
Or go to pocketbotanist.app/get on your phone
When to worry
Orange rust is a serious, incurable disease that will spread to other plants, so you must remove infected plants immediately. Yellowing due to minor nutrient issues is usually easy to fix with fertilizer.
Stopping it coming back
Buy certified disease free plants from reputable nurseries to avoid introducing rust. Keep your soil healthy with regular applications of organic matter.
Blackberry: yellow leaves? Check yours with a photo
Every plant is a little different. Take a photo of your blackberry 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.
Scan with your phone's camera to get the app
Or go to pocketbotanist.app/get on your phone
Get the app · Or check it from a photo now, free
Questions people ask
- Can I save a plant with orange rust?
- Unfortunately, no. Once a plant has orange rust, it is systemic and will continue to produce spores, so it must be removed.
- Is yellowing always a sign of disease?
- No, it can also be caused by poor drainage or nutrient deficiencies. Check the undersides of the leaves for spores to rule out rust first.
More problems with Blackberry
- Why are there spots on my blackberry leaves and canes?
- Why are there bugs on my blackberry plant?
- Why is my blackberry plant wilting?
- Why are my blackberry canes drooping?
- Why are my blackberry leaves turning brown at the tips?
- Why are my blackberry leaves falling off?
- Why is my blackberry plant not producing flowers?
- Why are my blackberry canes growing so long and leggy?
- Why are my blackberry leaves curling?
This article was generated with AI on from the plant’s care profile and is general information, not horticultural advice. Read about how we build these guides.

