Pest identification
What's eating my tomaselli's dioon?
Armored scale (Diaspididae)
Signs: Flat brown or gray shells on caudex and leaf undersides; frond chlorosis and stunted flushing
Control: Brush off with alcohol-dipped toothbrush; apply horticultural oil; systemic soil drench for persistent colonies
Mealybugs (Pseudococcus spp.)
Signs: Fluffy white wax masses in the crown and along the midrib; honeydew and black sooty mold
Control: Spot-treat with isopropyl alcohol; spray neem oil or insecticidal soap; repeat every 10 days
Spider mites (Tetranychus urticae)
Signs: Pale stippling and webbing on leaflet surfaces; worse in hot, dry indoor environments
Control: Raise humidity; rinse plant with water; apply neem oil or miticide; repeat for 3–4 weeks
Keep tomaselli's dioon pest-free
Healthy plants resist pests best. Get the basics right:
Tomaselli's Dioon pests — FAQ
What is eating my tomaselli's dioon?
Tomaselli's Dioon is a rare Mexican cycad grown as an indoor or patio collector's plant. Scale insects are the most common and damaging pest across all Dioon species. Mealybugs infiltrate the tight crown, and spider mites thrive in dry conditions. Consistent monitoring and prompt treatment are essential to protect slow new growth.
How do I get rid of armored scale (diaspididae) on tomaselli's dioon?
Flat brown or gray shells on caudex and leaf undersides; frond chlorosis and stunted flushing Brush off with alcohol-dipped toothbrush; apply horticultural oil; systemic soil drench for persistent colonies
How do I get rid of mealybugs (pseudococcus spp.) on tomaselli's dioon?
Fluffy white wax masses in the crown and along the midrib; honeydew and black sooty mold Spot-treat with isopropyl alcohol; spray neem oil or insecticidal soap; repeat every 10 days
How do I get rid of spider mites (tetranychus urticae) on tomaselli's dioon?
Pale stippling and webbing on leaflet surfaces; worse in hot, dry indoor environments Raise humidity; rinse plant with water; apply neem oil or miticide; repeat for 3–4 weeks