Pest identification
What's eating my polypody fern?
Scale insects
Signs: Hard or soft bumps along frond midribs and rhizome; yellowing pinnae and weakened growth
Control: Remove manually with an alcohol-soaked swab; apply neem oil spray every 7–10 days until clear
Spider mites
Signs: Stippled, pale fronds with fine webbing on undersides, especially in low humidity
Control: Raise humidity; spray fronds with insecticidal soap or neem oil solution; repeat every 5–7 days
Mealybugs
Signs: White waxy clusters around rhizome joints and frond bases; slowed or distorted growth
Control: Dab with isopropyl alcohol; follow with diluted neem oil spray; check rhizome at every watering
Keep polypody fern pest-free
Healthy plants resist pests best. Get the basics right:
Polypody Fern pests — FAQ
What is eating my polypody fern?
Polypody Fern (Polypodium vulgare) grown indoors can be attacked by scale insects and spider mites, both common on ferns kept in warm, dry rooms. Mealybugs occasionally infest the creeping rhizome. Outdoors this fern is largely pest-resistant, but indoor conditions weaken its defences — good humidity is the best prevention.
How do I get rid of scale insects on polypody fern?
Hard or soft bumps along frond midribs and rhizome; yellowing pinnae and weakened growth Remove manually with an alcohol-soaked swab; apply neem oil spray every 7–10 days until clear
How do I get rid of spider mites on polypody fern?
Stippled, pale fronds with fine webbing on undersides, especially in low humidity Raise humidity; spray fronds with insecticidal soap or neem oil solution; repeat every 5–7 days
How do I get rid of mealybugs on polypody fern?
White waxy clusters around rhizome joints and frond bases; slowed or distorted growth Dab with isopropyl alcohol; follow with diluted neem oil spray; check rhizome at every watering