Pest identification
What's eating my küster's ceratozamia?
Armored scale (Diaspididae)
Signs: Hard shells on caudex, petioles, and leaflet midribs; yellowing fronds and overall weakening
Control: Scrub off with alcohol; apply horticultural oil thoroughly; systemic imidacloprid drench for persistent colonies
Mealybugs (Pseudococcus spp.)
Signs: White powdery masses in crown and leaf axils; honeydew and black sooty mold on foliage
Control: Spot-treat with isopropyl alcohol; neem oil or insecticidal soap spray; repeat every 7–10 days
Spider mites (Tetranychus urticae)
Signs: Stippled, bronzing leaflets and fine webbing on undersides in low-humidity conditions
Control: Raise humidity; rinse plant; treat with neem oil or miticide; continue weekly for at least 3 weeks
Keep küster's ceratozamia pest-free
Healthy plants resist pests best. Get the basics right:
Küster's Ceratozamia pests — FAQ
What is eating my küster's ceratozamia?
Küster's Ceratozamia is a shade-adapted Mexican cycad kept in indoor collections and tropical greenhouses. Scale insects colonize the caudex and frond undersides and are the most common and damaging cycad pest. Mealybugs and spider mites complete the typical indoor pest complex. Consistent monitoring at every frond flush is essential.
How do I get rid of armored scale (diaspididae) on küster's ceratozamia?
Hard shells on caudex, petioles, and leaflet midribs; yellowing fronds and overall weakening Scrub off with alcohol; apply horticultural oil thoroughly; systemic imidacloprid drench for persistent colonies
How do I get rid of mealybugs (pseudococcus spp.) on küster's ceratozamia?
White powdery masses in crown and leaf axils; honeydew and black sooty mold on foliage Spot-treat with isopropyl alcohol; neem oil or insecticidal soap spray; repeat every 7–10 days
How do I get rid of spider mites (tetranychus urticae) on küster's ceratozamia?
Stippled, bronzing leaflets and fine webbing on undersides in low-humidity conditions Raise humidity; rinse plant; treat with neem oil or miticide; continue weekly for at least 3 weeks