Pest identification
What's eating my male fern?
Spider mites
Signs: Fine webbing and pale speckling on frond undersides; fronds lose deep green colour and dry at edges in severe cases.
Control: Raise humidity; rinse or shower the plant; apply insecticidal soap or neem oil spray on a weekly cycle.
Scale insects
Signs: Hard brown bumps on frond ribs and stems; honeydew deposits; fronds gradually weaken and yellow.
Control: Remove by hand with alcohol and a brush; spray with horticultural oil every 7–10 days for at least three rounds.
Fungus gnats
Signs: Larvae attack roots in waterlogged compost; adult gnats are a nuisance around the pot.
Control: Allow soil surface to dry; use Bti drench; set yellow sticky traps.
Keep male fern pest-free
Healthy plants resist pests best. Get the basics right:
Male Fern pests — FAQ
What is eating my male fern?
Male Fern kept as a houseplant faces spider mites and scale as its primary threats in indoor conditions. As a robust, large fern it tends to resist mild infestations, but scale can build up unnoticed on tough frond midribs. Fungus gnats are a risk if the plant is overwatered. Outdoors, slugs and sawfly larvae can damage fronds.
How do I get rid of spider mites on male fern?
Fine webbing and pale speckling on frond undersides; fronds lose deep green colour and dry at edges in severe cases. Raise humidity; rinse or shower the plant; apply insecticidal soap or neem oil spray on a weekly cycle.
How do I get rid of scale insects on male fern?
Hard brown bumps on frond ribs and stems; honeydew deposits; fronds gradually weaken and yellow. Remove by hand with alcohol and a brush; spray with horticultural oil every 7–10 days for at least three rounds.
How do I get rid of fungus gnats on male fern?
Larvae attack roots in waterlogged compost; adult gnats are a nuisance around the pot. Allow soil surface to dry; use Bti drench; set yellow sticky traps.