Why Pre-Emergent Failed Against Henbit—and When to Apply Next Time

Three Common Failure Points

1. Wrong product: Used grassy-weed pre-emergent instead of broadleaf.
2. Late application: Applied after mid-September when henbit/chickweed already sprouted.
3. No watering in: Failed to irrigate after spreading (label requirement).

Current and Future Control

Spot-spray existing henbit with post-emergent (Ortho Weed-B-Gon, Green Light Wipe-Out, Enforcer Weed-Stop). For next year: mark calendar for March 15 (summer weeds) and September 15 (broadleaf winter weeds). Water in with ½ inch after each application.