Pest identification
What's eating my crispum hart's tongue fern?
Scale insects
Signs: Brown waxy bumps on frond surfaces and midribs; sticky residue, yellowing, and frond die-back
Control: Scrub off with a soft cloth; swab with 70% isopropyl alcohol; apply neem oil spray every 10 days
Mealybugs
Signs: White cottony deposits in frond axils and crown; honeydew encourages sooty mold
Control: Remove manually with alcohol-soaked cotton; spray with insecticidal soap; isolate the plant
Spider mites
Signs: Pale stippling and webbing on frond undersides; worse in centrally heated, low-humidity rooms
Control: Boost humidity with a humidifier or pebble tray; spray with neem oil or insecticidal soap weekly
Keep crispum hart's tongue fern pest-free
Healthy plants resist pests best. Get the basics right:
- What eats hart's tongue fern — the species this cultivar belongs to
- What's wrong with my plant? — the diagnosis apps compared
- Common crispum hart's tongue fern problems & fixes
- Crispum Hart's Tongue Fern watering schedule
- Crispum Hart's Tongue Fern light requirements
- Full crispum hart's tongue fern care guide
Crispum Hart's Tongue Fern pests — FAQ
What is eating my crispum hart's tongue fern?
Crispum Hart's Tongue Fern (Asplenium scolopendrium 'Crispum') grown indoors is most troubled by scale insects anchoring to its wavy, strap-like fronds. Mealybugs and spider mites are secondary threats in warm, dry rooms. Its ruffled leaf margins create hiding spots — check frond undersides and the crown at every inspection.
How do I get rid of scale insects on crispum hart's tongue fern?
Brown waxy bumps on frond surfaces and midribs; sticky residue, yellowing, and frond die-back Scrub off with a soft cloth; swab with 70% isopropyl alcohol; apply neem oil spray every 10 days
How do I get rid of mealybugs on crispum hart's tongue fern?
White cottony deposits in frond axils and crown; honeydew encourages sooty mold Remove manually with alcohol-soaked cotton; spray with insecticidal soap; isolate the plant
How do I get rid of spider mites on crispum hart's tongue fern?
Pale stippling and webbing on frond undersides; worse in centrally heated, low-humidity rooms Boost humidity with a humidifier or pebble tray; spray with neem oil or insecticidal soap weekly