Pocket Botanist
Check these first
- Smell the soil for a musty or rotten odor.
- Gently lift the plant to inspect the roots for dark, slimy textures.
- Verify that the pot is not sitting in a saucer full of water.
Likely causes
Poor Drainage
Most likelyHow to tell: The soil smells sour or swampy. The plant stops growing and the base of the fronds may turn black.
What to do: Repot the fern into a container with plenty of drainage holes. Use a fresh, airy potting mix that contains perlite or bark.
Excessive Watering
Most likelyHow to tell: The plant wilts despite the soil being wet. Roots appear dark, slimy, and break apart easily when touched.
What to do: Trim away all mushy, dark roots with sterilized shears. Repot in fresh soil and water sparingly until new growth appears.
Find out what's wrong with your hart's tongue fern
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
When to worry
Root rot is always a serious concern that requires immediate action. If the entire root system is black and mushy, the plant may not be salvageable.
Stopping it coming back
Never let your fern sit in standing water. Always empty the saucer after watering.
Keep your hart's tongue fern 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.
Questions people ask
- Can I save a plant with root rot?
- If you catch it early and remove all decayed roots, the plant can recover. It will need time to establish a new, healthy root system.
- Does the pot material matter?
- Yes, porous pots like terracotta help the soil dry out faster. This can be helpful if you tend to overwater your ferns.
More problems with Hart's tongue fern
- Why are my Hart's tongue fern's leaves getting brown tips?
- Why are there spots on my Hart's tongue fern?
- Why does my Hart's tongue fern have pests?
- Why are my Hart's tongue fern's leaves turning yellow?
- Why is my Hart's tongue fern drooping?
- Why is my Hart's tongue fern dropping leaves?
- Why is my Hart's tongue fern looking leggy?
- Why are my Hart's tongue fern leaves curling?
Back to the Hart's tongue fern 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.