Robellini Palm Arm Rot After Storm Damage: Pruning and Recovery

Robellini Palm Arm Rot After Storm Damage: Pruning and Recovery

A 20-year-old Robellini palm with multiple trunks (arms) that lost two crowns after hurricane injury likely has fungal rot entering through storm wounds. The remaining healthy arms can be saved with prompt action.

Immediate Steps

1. Remove dead arms: Cut completely dead trunks at the base using a clean saw. This prevents pathogen spread.
2. Inspect remaining arms: Look for soft, discolored tissue or foul odor at the crown.
3. Apply fungicide: Drench the crown and soil with a systemic fungicide labeled for palms (e.g., fosetyl-Al or phosphonate).

Ongoing Care

• Water deeply but infrequently to avoid waterlogged soil.
• Fertilize with palm-specific fertilizer containing magnesium and manganese.
• Monitor for new spear leaf growth—healthy emergence indicates recovery.

While age and prior damage increase susceptibility, a reduced but healthy specimen is preferable to total loss.