One bag covers up to 12,000 square feet. Trimec Herbicide with 22-0-4 lawn fertilizer controls dandelions, chickweed, thistle, clover and many more broadleafs just like Trimec but also includes high-nitrogen fertilizer. Best results when dew is present or on pre-wetted turf Low rate application: 40 lbs per 12,000 sq ft. Medium rate application: 40 lbs per 10,000 sq ft.