Controlling Black Medic in Lawns: Cultural Practices and Targeted Herbicide Options

Cultural Suppression

• Mow 2–4 inches (per grass type) to shade out low-growing black medic.
• Lime twice yearly to raise soil pH (long-term discouragement).

Herbicide Timing

Late spring: Apply Scotts +2 post-emergent (or similar broadleaf herbicide).

1. Lightly wet lawn before application (helps adhesion).
2. No rain/irrigation for 24–48 hours.
3. If no rain, irrigate 15 minutes after waiting period.

Spot Treatment Alternative

Roundup (glyphosate) applied with a paintbrush to individual plants. 2 oz/gal. Avoid contact with desirable plants.

Location Matters

Grass type and climate affect product choice. Always read label for turfgrass safety.