Pocket Botanist
Check these first
- Stick your finger two inches into the soil to check for dampness.
- Lift the pot to see if it feels heavy with trapped water.
- Gently wiggle the stems to see if they are firm or soft.
Likely causes
Overwatering
Most likelyHow to tell: The stems feel mushy near the soil line and the leaves may turn yellow or brown.
What to do: Stop watering immediately and let the soil dry out completely. If the soil is soggy, repot the plant into fresh, well draining cactus mix and trim away any black, slimy roots.
Poor Drainage
PossibleHow to tell: Water pools at the bottom of the pot or the soil stays wet for more than three weeks.
What to do: Ensure your pot has drainage holes at the bottom. Use a porous potting mix that contains perlite or pumice to help air reach the roots.
Find out what's wrong with your zz plant
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
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When to worry
If the stems are soft and mushy at the base, the rot is advanced. A single yellow leaf is normal, but multiple soft stems indicate a serious problem.
Stopping it coming back
Always wait until the soil is completely dry throughout the pot before adding more water. Stick to a schedule of every 14 to 21 days, but adjust based on your home environment.
ZZ Plant: root rot? Check yours with a photo
Every plant is a little different. Take a photo of your zz plant 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 ZZ plant with root rot?
- Yes, if you catch it early. Remove the plant from the pot, cut off the mushy roots, and repot it in dry, fresh soil.
- How do I know if the rhizomes are healthy?
- Healthy rhizomes are firm and light colored. If they are dark, squishy, or smell bad, they are rotting.
More problems with ZZ Plant
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.