Can I use neem oil on my staghorn fern?

Be very careful with neem oil as it can burn the delicate fronds. It is safer to use a gentle wipe with soapy water or rubbing alcohol instead.

Should I cut off all spotted fronds?

Only remove fronds that are more than half covered in spots. Healthy parts of the frond still help the plant produce energy.

Staghorn fern: spots, causes and fixes

Check these first

Inspect the underside of the fronds for small brown bumps.
Feel the moss to see if it has been soggy for more than a few days.
Check if the plant is in a stagnant corner with no breeze.

Likely causes

Fungal leaf spot
Possible
How to tell: You will see dark, irregular brown or black patches on the fronds that may spread if left untreated. This happens when the plant stays wet for too long without airflow.
What to do: Trim off the heavily affected fronds with clean scissors. Improve airflow around the plant by moving it to a spot with better ventilation and avoid misting the leaves directly.
Scale insects
Possible
How to tell: These appear as small, hard brown bumps that look like tiny shields on the fronds. They suck sap and leave behind sticky residue.
What to do: Gently scrape the bumps off with a soft toothbrush or cotton swab dipped in rubbing alcohol. Repeat this process weekly until you no longer see any insects.

Find out what's wrong with your staghorn 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

Worry if the spots are spreading rapidly or if the fronds are turning mushy. A single small spot on an older frond is usually nothing to panic about.

Stopping it coming back

Ensure your fern has good air circulation and always water by soaking the root ball rather than pouring water over the fronds.

Keep your staghorn 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.

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Questions people ask

Can I use neem oil on my staghorn fern?: Be very careful with neem oil as it can burn the delicate fronds. It is safer to use a gentle wipe with soapy water or rubbing alcohol instead.
Should I cut off all spotted fronds?: Only remove fronds that are more than half covered in spots. Healthy parts of the frond still help the plant produce energy.

Why are there brown spots on my staghorn fern?