Can I save a plant with root rot?

If you catch it early, you can trim the rotten roots and repot the plant in fresh soil. If the rot has reached the main stem, it is often too late.

How often should I water to avoid rot?

Water every 2 to 4 days, but always check the soil first. If it still feels wet, wait another day before watering.

Canna lily: root rot, causes and fixes

Check these first

Smell the soil for a foul or swampy odor.
Check the bottom of the pot to ensure water is draining freely.
Gently lift the plant to see if the roots look black or mushy.

Likely causes

Overwatering
Possible
How to tell: The leaves turn yellow or brown and the base of the stem feels soft or mushy. The soil may have a sour or swampy smell.
What to do: Stop watering immediately and let the top few inches of soil dry out. If the rot is severe, repot the plant into fresh, well-draining soil and trim away any black, slimy roots.
Poor Drainage
Possible
How to tell: Water sits on the surface of the soil for a long time after watering. The pot lacks holes or the soil is too dense and heavy.
What to do: Ensure your pot has drainage holes at the bottom. Use a well-draining potting mix that allows air to reach the roots.

Root rot in other plants

Find out what's wrong with your canna lily

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

Root rot is serious and can kill the plant if left untreated. If the stem base is soft and mushy, the plant may be beyond saving.

Stopping it coming back

Use a well-draining soil mix and always empty the saucer under the pot so the plant never sits in standing water.

Canna lily: root rot? Check yours with a photo

Every plant is a little different. Take a photo of your canna lily 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 you catch it early, you can trim the rotten roots and repot the plant in fresh soil. If the rot has reached the main stem, it is often too late.
How often should I water to avoid rot?: Water every 2 to 4 days, but always check the soil first. If it still feels wet, wait another day before watering.

Why is my Canna lily suffering from root rot?