Weed Control Timing in St. Augustine Grass

Why Six-Week Intervals Fail

Many weeds complete germination-to-seed cycles in under six weeks. By the time your service returns, new weeds have emerged and matured.

Improved Management Strategy

• Monthly applications better match weed life cycles
• Verify pre-emergent use: Ask if service applies germination inhibitors
• Evaluate application quality: Rate (oz/1000 sq ft), coverage (gal/1000 sq ft), weather conditions at application

Herbicide Specificity Matters

Products target specific weed types: pre-emergent, emerged broadleaf, sedges, etc. Ineffective control often stems from wrong product, rate, timing, or environmental conditions—not product failure per se.

Discuss schedule adjustment and product selection with your service provider based on observed weed spectrum.