Pest identification
What's eating my formosan polypody?
Scale insects
Signs: Small brown or cream shells on rhizomes and frond midribs; yellowing fronds and sticky honeydew
Control: Scrape off with a soft toothbrush; apply insecticidal soap or neem oil; repeat every 10–14 days
Mealybugs
Signs: Cottony white residue along rhizome segments; reduced vigour and distorted new fronds
Control: Spot-treat with a 70% isopropyl swab; follow with weekly neem oil spray until no signs remain
Spider mites
Signs: Pale stippling on frond surfaces; webbing on undersides; fronds bronze and dry out
Control: Increase humidity, rinse fronds, and apply insecticidal soap or neem oil every 7 days for 3–4 weeks
Keep formosan polypody pest-free
Healthy plants resist pests best. Get the basics right:
Formosan Polypody pests — FAQ
What is eating my formosan polypody?
Formosan Polypody (Polypodium formosanum) is a delicate epiphytic fern that most commonly suffers from scale insects and mealybugs sheltering in its silver-grey rhizomes. Spider mites can cause rapid frond discolouration in dry indoor air. The exposed rhizomes make inspection easier — check them at every watering.
How do I get rid of scale insects on formosan polypody?
Small brown or cream shells on rhizomes and frond midribs; yellowing fronds and sticky honeydew Scrape off with a soft toothbrush; apply insecticidal soap or neem oil; repeat every 10–14 days
How do I get rid of mealybugs on formosan polypody?
Cottony white residue along rhizome segments; reduced vigour and distorted new fronds Spot-treat with a 70% isopropyl swab; follow with weekly neem oil spray until no signs remain
How do I get rid of spider mites on formosan polypody?
Pale stippling on frond surfaces; webbing on undersides; fronds bronze and dry out Increase humidity, rinse fronds, and apply insecticidal soap or neem oil every 7 days for 3–4 weeks