Crape Myrtle Not Blooming with Brown Leaf Edges: Sun and Water Fixes

My young crape myrtle in San Jose barely bloomed this year and has had brown, lacy leaf edges for months. It's planted in a scrub area that gets less water than the lawn. It bloomed well last year. What can I do?

Two Separate Issues

1. No Blooms = Insufficient Sun

Crape myrtles need full, baking sun (6+ hours direct) to flower heavily. Even partial shade from maturing nearby trees drastically reduces blooms. Check if surrounding vegetation has grown and shaded your tree since last year.

2. Brown Leaf Edges = Water Stress

The "laced" brown margins indicate moisture deficit. In a scrub area without irrigation, the tree relies on rainfall—which may be insufficient, especially during bloom/fruit set.

Solutions

For Blooms

• Prune surrounding trees to restore full sun
• If impossible, accept fewer blooms or consider relocating (winter dormant season)

For Water

• Deep water weekly: Place a straight-sided pan under canopy; run sprinkler until 1″ collects
• Mulch 3″ deep to drip line (keep off trunk)
• Consider drip irrigation for consistency

Other Checks

• Powdery mildew: White coating on leaves? → improve air flow, treat with neem oil
• Aphids: Curling new growth, sticky honeydew? → blast with water or insecticidal soap
• Fertilizer: Light balanced feed in spring; avoid high nitrogen after July

Restore sun and water, and your crape myrtle should return to form.