Pest identification
What's eating my mexican blue palm?
Scale insects
Signs: Encrusted bumps on frond rachis and leaflets; sticky honeydew and yellowing.
Control: Spray with horticultural oil in spring; scrub accessible scales and follow with a systemic drench for severe cases.
Palm aphids (Cerataphis brasiliensis)
Signs: Colonies of flat dark aphids on leaflet undersides; honeydew and sooty mold dull the blue-silver color.
Control: Blast off with water; apply neem oil or insecticidal soap; promote natural predators.
Thrips
Signs: Silver-bronze streaking and stippling on new fronds; deformed emerging leaves in heavy infestations.
Control: Apply spinosad or insecticidal soap to new spear growth; release predatory Amblyseius cucumeris in enclosed settings.
Keep mexican blue palm pest-free
Healthy plants resist pests best. Get the basics right:
- What eats mexican blue palm — the species this cultivar belongs to
- What eats mexican blue palm — our other guide for the same plant
- What's wrong with my plant? — the diagnosis apps compared
- Common mexican blue palm problems & fixes
- Mexican Blue Palm watering schedule
- Mexican Blue Palm light requirements
- Full mexican blue palm care guide
Mexican Blue Palm pests — FAQ
What is eating my mexican blue palm?
Mexican Blue Palm (Brahea armata) is a drought-tolerant outdoor palm with relatively few pest problems. Its main enemies are scale insects on the silvery fronds, palm aphids beneath leaflets, and occasional thrips that scar new growth. Deer may browse young plants in gardens where deer pressure is high.
How do I get rid of scale insects on mexican blue palm?
Encrusted bumps on frond rachis and leaflets; sticky honeydew and yellowing. Spray with horticultural oil in spring; scrub accessible scales and follow with a systemic drench for severe cases.
How do I get rid of palm aphids (cerataphis brasiliensis) on mexican blue palm?
Colonies of flat dark aphids on leaflet undersides; honeydew and sooty mold dull the blue-silver color. Blast off with water; apply neem oil or insecticidal soap; promote natural predators.
How do I get rid of thrips on mexican blue palm?
Silver-bronze streaking and stippling on new fronds; deformed emerging leaves in heavy infestations. Apply spinosad or insecticidal soap to new spear growth; release predatory Amblyseius cucumeris in enclosed settings.