Pest identification
What's eating my royal fern?
Scale insects
Signs: Small raised bumps on frond stems and midribs; sticky honeydew and weakened, yellowing fronds
Control: Scrape off with a soft brush; apply neem oil or insecticidal soap spray; treat every two weeks until gone
Mealybugs
Signs: Fluffy white deposits in the crown and at frond bases; distorted or stunted new growth
Control: Dab with isopropyl alcohol; apply insecticidal soap spray; remove severely affected fronds and isolate the plant
Spider mites
Signs: Yellowing, stippled leaflets; dry webbing on frond undersides in low-humidity rooms
Control: Increase humidity with a humidifier or pebble tray; spray with neem oil or insecticidal soap weekly
Keep royal fern pest-free
Healthy plants resist pests best. Get the basics right:
Royal Fern pests — FAQ
What is eating my royal fern?
Royal Fern grown as a houseplant is susceptible to mealybugs and scale insects in low-humidity indoor environments. Spider mites may also colonize fronds in heated rooms. In outdoor or conservatory settings it can occasionally face slug damage on young growth. Consistent moisture and good air circulation reduce most pest pressure.
How do I get rid of scale insects on royal fern?
Small raised bumps on frond stems and midribs; sticky honeydew and weakened, yellowing fronds Scrape off with a soft brush; apply neem oil or insecticidal soap spray; treat every two weeks until gone
How do I get rid of mealybugs on royal fern?
Fluffy white deposits in the crown and at frond bases; distorted or stunted new growth Dab with isopropyl alcohol; apply insecticidal soap spray; remove severely affected fronds and isolate the plant
How do I get rid of spider mites on royal fern?
Yellowing, stippled leaflets; dry webbing on frond undersides in low-humidity rooms Increase humidity with a humidifier or pebble tray; spray with neem oil or insecticidal soap weekly