Pocket Botanist
Check these first
- Stick your finger 3 inches into the soil to check for moisture.
- Check if the pot has drainage holes at the bottom.
- Smell the soil for a sour or rotten odor.
Likely causes
Overwatering
Most likelyHow to tell: The soil feels constantly soggy, and the leaves may turn yellow or brown before dropping. The roots will look mushy and dark instead of firm and white.
What to do: Stop watering immediately and let the top 3 to 4 inches of soil dry out completely. If the pot lacks drainage holes, move the plant to a container that allows excess water to escape.
Poor soil drainage
PossibleHow to tell: Water pools on the surface for a long time after you pour it. The soil feels heavy and dense like clay.
What to do: Repot the tree into a well draining mix that includes perlite or coarse sand. Ensure the pot has plenty of holes at the bottom to prevent standing water.
When to worry
If the stem base feels soft or mushy, the rot may have spread too far. This is often a sign that the plant is beyond saving.
Stopping it coming back
Always wait until the top few inches of soil are dry before watering again, and never let the pot sit in a saucer of standing water.
Not sure which one it is? Photograph your star apple.
This page lists the usual causes. Pocket Botanist looks at your actual leaf and tells you the likely cause, how serious it is, and what to try first. Identification and a health check are free.
Questions people ask
- Should I fertilize a plant with root rot?
- No, never fertilize a sick plant. Wait until it shows signs of new, healthy growth before adding any nutrients.
- Can I save a plant with root rot?
- If you catch it early, you can trim away the mushy roots and repot the plant in fresh, dry soil. If the roots are mostly black and slimy, it is usually too late.
More problems with Star apple
This article was generated with AI from the plant’s care profile and is general information, not horticultural advice. Read about how we build these guides.