Pest identification
What's eating my mother fern?
Scale insects
Signs: Tan or brown bumps on frond midribs; sticky honeydew and sooty mould; fronds yellow and drop
Control: Physically remove with a soft toothbrush; apply neem oil or insecticidal soap weekly; check bulbils closely as pests shelter beneath them
Mealybugs
Signs: White waxy fluff in frond axils and on bulbils; sap-feeding causes wilting and distortion
Control: Spot-treat with alcohol swabs; follow with neem oil spray; repeat every 7–10 days until no signs remain
Aphids
Signs: Clusters of small soft insects on tender new fronds; curling or distorted growth; sticky honeydew
Control: Knock off with a strong stream of water; apply insecticidal soap spray; introduce lacewing larvae if infestation persists indoors
Fungus gnats
Signs: Root damage from larvae in wet compost; adult gnats emerging from soil
Control: Improve drainage and allow surface compost to dry; apply Bti drench; use sticky traps to monitor adult populations
Keep mother fern pest-free
Healthy plants resist pests best. Get the basics right:
Mother Fern pests — FAQ
What is eating my mother fern?
Mother Fern (Asplenium bulbiferum) is particularly vulnerable to scale insects and mealybugs, which shelter among the lacy, finely divided fronds. Aphids occasionally colonise new growth. Fungus gnats thrive if the compost stays soggy. Inspect the tiny plantlets (bulbils) carefully — pests hide beneath them.
How do I get rid of scale insects on mother fern?
Tan or brown bumps on frond midribs; sticky honeydew and sooty mould; fronds yellow and drop Physically remove with a soft toothbrush; apply neem oil or insecticidal soap weekly; check bulbils closely as pests shelter beneath them
How do I get rid of mealybugs on mother fern?
White waxy fluff in frond axils and on bulbils; sap-feeding causes wilting and distortion Spot-treat with alcohol swabs; follow with neem oil spray; repeat every 7–10 days until no signs remain
How do I get rid of aphids on mother fern?
Clusters of small soft insects on tender new fronds; curling or distorted growth; sticky honeydew Knock off with a strong stream of water; apply insecticidal soap spray; introduce lacewing larvae if infestation persists indoors
How do I get rid of fungus gnats on mother fern?
Root damage from larvae in wet compost; adult gnats emerging from soil Improve drainage and allow surface compost to dry; apply Bti drench; use sticky traps to monitor adult populations