One-Step Way to Fertilize and Control Lawn Weeds for 12 Weeks GreenView Fairway Formula Spring Fertilizer Weed & Feed and Crabgrass Preventer makes fast work of early season lawn maintenance. In one step, you apply season-long fertilizer and control of weeds. One application of GreenView Fairway Formula Spring Fertilizer Weed & Feed and Crabgrass Preventer delivers the correct amount of nitrogen for the lawn from spring through summer. At the same time, it controls crabgrass, dandelions and other weeds for the season. 59 to 65 percent of the fertilizer is slow-release, specially formulated to break down steadily to provide all the nitrogen your lawn will need for 12 weeks. It is the only product on the market that fertilizes while eliminating and preventing crabgrass and killing more than 200 broadleaf weeds, such as dandelions and clover. The controlled-release fertilizer does not cause excessive growth, which means less mowing. The fertilizer builds a thick green turf from the roots up, for a healthier, weed-free lawn. Timing is key to the best results. Apply when dandelions are visible, but have not developed their seed heads or puffballs. Apply when the grass is damp so the product adheres to the leaves. Always read and follow the label directions.