Ferti-lome's A-vert is one of the best pre-emergent weed killers on the market.
It contains three different herbicides, so it can prevent many different kinds of weeds, including both broadleaf and grassy weeds.
It also contains a fertilizer to help your lawn get the nutrients it needs to thrive.
One bag of A-vert covers 2,000 square feet.
One application will last all season long.
Apply in late winter or early spring to prevent weed seeds from germinating, and again in the fall to prevent winter weeds.