Troubleshooting
Ceratozamia robusta problems — and how to fix them
Ceratozamia robusta (Ceratozamia 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.
Frost and cold damage
Strictly tender, the large soft fronds are burnt by cold and killed by frost. Grow only in warm, frost-free conditions or move container plants under cover for winter.
Root and stem rot
Heavy or waterlogged soil rots the trunk. Plant in a rich but free-draining mix and water generously only when drainage is excellent.
Leaf scorch and tip browning
Strong sun or dry air browns the broad leaflets. Provide shade and humidity, and shelter the long fronds from drying wind.
Scale and mealybug
Sap-sucking pests favour the rachis and leaflet undersides of the large leaves. Control with horticultural oil and inspect each new flush carefully.
Prevent ceratozamia robusta problems before they start
Most ceratozamia robusta issues are care-mismatch, not bad luck. Dial in the basics:
Looking for ceratozamia robusta in general rather than its problems? Read the full ceratozamia robusta care guide — light, water, soil and feeding.
Ceratozamia robusta problems — FAQ
Why is my ceratozamia robusta frost and cold damage?
Strictly tender, the large soft fronds are burnt by cold and killed by frost. Grow only in warm, frost-free conditions or move container plants under cover for winter.
Why is my ceratozamia robusta root and stem rot?
Heavy or waterlogged soil rots the trunk. Plant in a rich but free-draining mix and water generously only when drainage is excellent.
Why is my ceratozamia robusta leaf scorch and tip browning?
Strong sun or dry air browns the broad leaflets. Provide shade and humidity, and shelter the long fronds from drying wind.
Why is my ceratozamia robusta scale and mealybug?
Sap-sucking pests favour the rachis and leaflet undersides of the large leaves. Control with horticultural oil and inspect each new flush carefully.