Can I reuse the soil if I find root rot?

No, discard the old soil as it likely contains fungal spores. Use fresh, sterile potting mix when repotting.

How do I know if the roots are healthy?

Healthy roots are firm and usually light tan or white. Mushy, dark, or hollow roots are signs of decay.

Marginal wood fern: root rot, causes and fixes

Check these first

Smell the soil for a musty or rotten odor.
Inspect the roots for a slimy or black appearance.
Check if the pot is sitting in standing water.

Likely causes

Overwatering
Most likely
How to tell: The soil stays soggy for days and the base of the plant looks dark or mushy.
What to do: Stop watering immediately and let the top two inches of soil dry out. If the damage is severe, repot the fern into fresh, well draining soil and trim away any black, slimy roots.
Poor Drainage
Most likely
How to tell: Water pools at the bottom of the pot or the soil remains waterlogged despite infrequent watering.
What to do: Ensure your pot has adequate drainage holes at the bottom. Use a potting mix amended with perlite to improve airflow around the roots.

Root rot in other plants

Find out what's wrong with your marginal wood 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.

When to worry

If the stems are turning black and mushy at the base, the rot is advanced and the plant may be difficult to save. Some yellowing of old fronds is normal, but widespread collapse is a sign of trouble.

Stopping it coming back

Always empty the saucer after watering and never let the pot sit in standing water.

Marginal wood fern: root rot? Check yours with a photo

Every plant is a little different. Take a photo of your marginal wood fern 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 reuse the soil if I find root rot?: No, discard the old soil as it likely contains fungal spores. Use fresh, sterile potting mix when repotting.
How do I know if the roots are healthy?: Healthy roots are firm and usually light tan or white. Mushy, dark, or hollow roots are signs of decay.

Why does my Marginal wood fern have root rot?