Crepe Myrtle Covered in Spanish Moss: Pruning and Moss Control

30-ft grafted Crepe Myrtle (Lagerstroemia) in Jacksonville, FL (zone 9a) covered in Spanish moss (Tillandsia usneoides); only tip growth; never pruned in 15+ years. Bushier 20-ft specimens also unpruned but moss-free.

Spanish Moss Facts

• Epiphytic bromeliad; not parasitic—gets nutrients from air/rain.
• Heavy infestation shades interior, reduces photosynthesis, weakens tree.
• Indicates high humidity, good air quality, and open canopy.

Moss Removal

• Manual: Pull off by hand/rake (wear gloves). Labor-intensive but effective.
• Copper fungicide (e.g., Bordeaux mix) kills moss; follow label.
• Baking soda spray (1 tbsp/gal water) may help.
• Control first, then prune.

Pruning Strategy

1. Timing: Late winter (Feb) before new growth.
2. Remove: Dead, crossing, rubbing branches; suckers at base.
3. Thin canopy: Open center for light/air penetration (reduces moss return).
4. Reduce height: Cut back to strong lateral branches; avoid topping.
5. Hire certified arborist for large tree near deck—liability and safety.

Bushier Specimens

Same pruning principles; they'll respond with vigorous new growth and better flowering.

Contact UF/IFAS Extension for moss-specific treatments.