Can I save a plant with root rot?

If some roots are still white and firm, you can trim away the mushy parts and repot in fresh, dry soil. If all roots are mushy, the plant is likely too far gone.

How often should I water to avoid rot?

Most Thanksgiving cacti need water every 7 to 14 days. Always check the soil dryness first rather than sticking to a strict calendar.

Thanksgiving cactus: root rot, causes and fixes

Check these first

Touch the soil to see if it is soggy.
Smell the soil for a sour or rotten odor.
Gently lift the plant to check if roots are brown and slimy.

Likely causes

Overwatering
Most likely
How to tell: The soil stays wet for a long time and the base of the stems feels soft or looks translucent.
What to do: Stop watering immediately and let the soil dry out completely. If the pot has no drainage holes, move the plant to one that does.
Poor Drainage
Possible
How to tell: Water pools at the bottom of the pot or the soil remains soggy even weeks after watering.
What to do: Repot the cactus into a well draining succulent mix. Ensure the pot has holes at the bottom to allow excess water to escape.

Root rot in other plants

Find out what's wrong with your thanksgiving cactus

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 stems are black or falling off, the rot has likely reached the core and the plant may not recover. Some minor softening can be fixed if caught early.

Stopping it coming back

Always wait until the top inch of soil is dry before watering again. Use a porous pot to help the soil breathe.

Thanksgiving cactus: root rot? Check yours with a photo

Every plant is a little different. Take a photo of your thanksgiving cactus 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 some roots are still white and firm, you can trim away the mushy parts and repot in fresh, dry soil. If all roots are mushy, the plant is likely too far gone.
How often should I water to avoid rot?: Most Thanksgiving cacti need water every 7 to 14 days. Always check the soil dryness first rather than sticking to a strict calendar.

Why are my Thanksgiving cactus stems turning mushy?