One formula fertilizes for lush, green turf AND has Trimec herbicide to effectively destroy dandelions and other broadleafs! A post-emergent herbicide, the Trimec kills weeds already growing in your lawn! Plus, you fertilize the grass for a lush, green look with this high-nitrogen formula. Controls dandelions, chickweed, thistle, clover and many more broadleaf weeds but also includes high-nitrogen fertilizer. 1 bag covers 10,000 sq. ft.