Crepe Myrtle Bark Shedding and Biennial Blooming: Normal vs. Nutrient Needs

Bark Shedding = Normal

Peeling, flaking bark on mature crepe myrtle (Lagerstroemia) is characteristic and healthy—reveals beautiful mottled trunks. No action needed.

Poor Blooming Causes

1. Insufficient Sun: Needs 6+ hrs direct sun. Shade = fewer flowers.
2. Nutrient Deficiency: Especially phosphorus/potassium for flowering.
3. Improper Pruning: "Crepe murder" (topping) removes flower wood.

Action Plan

• Prune Correctly: Late winter. Remove dead wood, crossing branches, suckers. Do not top.
• Deadhead: Remove spent flower clusters after first bloom → encourages second flush.
• Fertilize: 10-10-10 at 1 lb per inch trunk diameter. Scatter under canopy, water in. Best: just before rain.
• Assess Sun: If <6 hrs, consider limb-up nearby trees (not moving crepe myrtle—high transplant risk).

Bloom Cycle Note

Some cultivars naturally alternate heavy/light years. Fertilizing and deadheading maximize annual potential.