How to Eradicate Chamberbitter (Mimosa Weed)

Chamberbitter (Phyllanthus urinaria), often called mimosa weed, is a tropical annual that invades lawns and beds. It can be controlled with post-emergent and pre-emergent herbicides.

Post-Emergent Control

• Glyphosate: Spot-treat in beds, taking care to avoid contact with desirable plants.
• Broadleaf weed killer: In lawns, apply twice, seven days apart.

Hand-pulling is the only reliable organic option.

Pre-Emergent Prevention

Apply dithiopyr in late April and again in mid-June to areas where you will not be seeding. Always read and follow label directions.