Skip to content

Plantain Lily · Hosta

How do I fix root rot on my Hosta?

It is less common for a Hosta to get root rot unless the soil stays soggy for too long. Check your drainage and watering habits immediately.

root rot on a plant
Photo: Ninjatacoshell, CC BY-SA 3.0

Check these first

  1. Check if the soil is constantly wet or muddy.
  2. Smell the soil for a foul, swampy odor.
  3. Gently tug the plant to see if it feels loose in the ground.

Likely causes

  1. Overwatering

    Most likely

    How to tell: The leaves turn yellow and the base of the plant feels mushy. The roots will look dark, slimy, and smell bad.

    What to do: Stop watering immediately and let the soil dry out. If the rot is severe, dig up the plant, trim away the black mushy roots, and replant in fresh, well draining soil.

  2. Poor Drainage

    Possible

    How to tell: Water pools around the base of the plant after rain or irrigation. The plant looks stunted and sickly.

    What to do: Amend the soil with organic matter or grit to improve drainage. If the plant is in a container, ensure it has holes at the bottom.

Find out what's wrong with your plantain 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.

Download on the App StoreGet it on Google Play

When to worry

If the crown of the plant is mushy and falling apart, the plant is likely beyond saving. It is normal for a few roots to die back during winter dormancy.

Stopping it coming back

Only water when the top inch of soil is dry and ensure your planting site drains well.

Keep your plantain lily healthy from here

Save your plant in Pocket Botanist and you get care reminders timed for this plant, plus a care history that shows what worked. Identification and a health check are free.

Download on the App StoreGet it on Google Play

Get the app · Or check it from a photo now, free

Questions people ask

Can a Hosta survive root rot?
If you catch it early and remove the rotted parts, the plant can recover. It will need time to grow a new, healthy root system.
How often should I water to avoid rot?
Water every 3 to 7 days, but always check the soil first. If it is still damp, wait another day or two.

More problems with Plantain Lily

Back to the Plantain Lily guide

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.