Jonathan Green 5,000 sq. ft. Coverage Lawn Weed Control. It has an improved formula with Trimec technology that provides broadleaf weed control for over 200 lawn weeds including dandelion, clover, chickweed, common purslane, etc. It can be used anytime of the year when weeds are actively growing, spring through fall. It can be used on cool & warm season grasses. It does not contain fertilizer and can be used when you want to control weeds without fertilizing. Delay seeding for 4 weeks after application.