Controlling Desmodium tortuosum (Florida Beggarweed) in St. Augustine

You have 1.25 acres of beggarweed mixed with St. Augustine. Hand-digging is impractical. You found herbicides with sulfentrazone but don’t know which to choose.

Why Product Selection Is Complex

• Florida restricts atrazine (common for broadleaf in St. Augustine) to certified applicators and prohibits summer use.
• Many herbicides are not labeled for residential lawns.
• Sulfentrazone products vary in formulation, surfactant load, and crop tolerance.

Best Path Forward

1. Contact your County Extension Office—they know current labels, restrictions, and local efficacy data.
2. Bring a weed sample for positive ID; some Desmodium species respond differently.
3. Ask about spot-treatment vs. broadcast, timing, and any required surfactant.

Don’t guess—misapplication can damage your St. Augustine and violate state law.