Check these first
- Feel the soil several inches deep to see if it is saturated.
- Check the base of the stem for soft or discolored tissue.
- Inspect the drainage holes to ensure they are not blocked.
Likely causes
Overwatering
Most likelyHow to tell: The soil stays damp for weeks and the base of the stem feels soft or mushy. You might notice a sour smell coming from the dirt.
What to do: Stop watering immediately and let the soil dry out completely. If the plant is in a container, ensure it has large drainage holes and move it to a spot with better airflow.
Poor Drainage
PossibleHow to tell: Water pools on the surface for hours after rain or irrigation. The soil composition is likely too heavy or clay based.
What to do: Amend the surrounding soil with coarse sand or gravel to improve drainage. If the plant is in a pot, repot it into a gritty, cactus friendly soil mix.
Find out what's wrong with your rubber rabbitbrush
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
If the entire base of the stem is mushy, the plant may be too far gone to save. It is normal for the plant to look slightly stressed after a period of unusually heavy rainfall.
Stopping it coming back
Only water during the first year of establishment and ensure the soil is extremely well draining.
Rubber rabbitbrush: root rot? Check yours with a photo
Every plant is a little different. Take a photo of your rubber rabbitbrush 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 root rot?
- If you catch it early and stop watering, the plant might recover. If the roots are black and slimy, it is usually too late.
- How often should I water my rabbitbrush?
- Once established, you should not need to water it at all. During the first year, water deeply every 14 to 30 days only if the soil is bone dry.
More problems with Rubber rabbitbrush
Back to the Rubber rabbitbrush guide
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.

