Using Scott's Bonus S in Houston: Timing and Considerations

Weed Control Timing in the Gulf Coast Climate

A Houston homeowner asked about applying Scott's Bonus S (a weed-and-feed product) to a weed-infested lawn. The answer directed them to the Scotts website for specific application timing, as product labels and regional recommendations change.

Understanding Bonus S

Scott's Bonus S combines fertilizer with atrazine, a pre-emergent and early post-emergent herbicide effective on many broadleaf weeds and some grasses. In Houston's warm, humid climate (USDA Zone 9a), application timing is critical:

• Late winter/early spring (February-March): Pre-emergent window for summer weeds like crabgrass.
• Fall (October-November): Pre-emergent for winter weeds like annual bluegrass and henbit.
• Avoid summer applications: High temperatures increase risk of turf injury from atrazine.

Houston-Specific Considerations

St. Augustine grass, common in Houston, is sensitive to atrazine during green-up and hot weather. Bermuda and zoysia tolerate it better. Always check the current label for:

• Approved grass types
• Temperature restrictions
• Watering requirements after application
• Maximum annual applications

Better Alternatives for Severe Weed Problems

For a lawn that "looks horrible" with weeds, a multi-step approach works better than a single weed-and-feed application:

1. Identify weed types (broadleaf vs. grassy, annual vs. perennial).
2. Use targeted post-emergent herbicides for existing weeds.
3. Apply pre-emergent herbicides at the correct seasonal windows.
4. Improve cultural practices: proper mowing height, deep infrequent watering, and balanced fertilization.

Resources

Consult the Scotts website or Texas A&M AgriLife Extension for current Houston-specific lawn calendars and product recommendations.