Troubleshooting
Mount Lewis King Palm problems — and how to fix them
Mount Lewis King Palm (Archontophoenix purpurea) is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Ganoderma butt rot
Lethal fungal disease; no cure — avoid wounding the trunk base, which provides entry points for the pathogen.
Lethal yellowing
Phytoplasma disease spread by planthoppers; inject with oxytetracycline as a preventive in endemic areas.
Spider mites
Occur in dry or indoor conditions; treat with insecticidal soap and maintain high humidity.
Frond tip browning
Low humidity or inconsistent watering; mulch the root zone and maintain moisture.
Potassium deficiency
Translucent orange-yellow spots on older fronds; apply a palm fertiliser with adequate potassium.
Prevent mount lewis king palm problems before they start
Most mount lewis king palm issues are care-mismatch, not bad luck. Dial in the basics:
Mount Lewis King Palm problems — FAQ
Why is my mount lewis king palm ganoderma butt rot?
Lethal fungal disease; no cure — avoid wounding the trunk base, which provides entry points for the pathogen.
Why is my mount lewis king palm lethal yellowing?
Phytoplasma disease spread by planthoppers; inject with oxytetracycline as a preventive in endemic areas.
Why is my mount lewis king palm spider mites?
Occur in dry or indoor conditions; treat with insecticidal soap and maintain high humidity.
Why is my mount lewis king palm frond tip browning?
Low humidity or inconsistent watering; mulch the root zone and maintain moisture.
Why is my mount lewis king palm potassium deficiency?
Translucent orange-yellow spots on older fronds; apply a palm fertiliser with adequate potassium.