Troubleshooting
Mexican Fan Palm problems — and how to fix them
Mexican Fan Palm (Washingtonia robusta) 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.
Sharp leaf-stalk spines
The recurved teeth along the petiole margins can cut skin and harbour bacteria; handle with gloves and keep fallen fronds away from pets and walkways.
Potassium / magnesium deficiency
Older fronds show orange-yellow spotting or translucent tips on sandy soils; correct with a palm fertiliser and avoid trimming yellowing-but-green fronds.
Outgrowing its site
Extremely fast and very tall, it quickly overwhelms small gardens and is a poor long-term container plant; choose the site with mature height in mind.
Pink rot / Gliocladium
Stressed or wounded palms can develop pink rot fungus on the crown and stem; avoid mechanical injury and keep the palm well fed and watered to limit stress.
Prevent mexican fan palm problems before they start
Most mexican fan palm issues are care-mismatch, not bad luck. Dial in the basics:
Looking for mexican fan palm in general rather than its problems? Read the full mexican fan palm care guide — light, water, soil and feeding.
Mexican Fan Palm problems — FAQ
Why is my mexican fan palm sharp leaf-stalk spines?
The recurved teeth along the petiole margins can cut skin and harbour bacteria; handle with gloves and keep fallen fronds away from pets and walkways.
Why is my mexican fan palm potassium / magnesium deficiency?
Older fronds show orange-yellow spotting or translucent tips on sandy soils; correct with a palm fertiliser and avoid trimming yellowing-but-green fronds.
Why is my mexican fan palm outgrowing its site?
Extremely fast and very tall, it quickly overwhelms small gardens and is a poor long-term container plant; choose the site with mature height in mind.
Why is my mexican fan palm pink rot / gliocladium?
Stressed or wounded palms can develop pink rot fungus on the crown and stem; avoid mechanical injury and keep the palm well fed and watered to limit stress.