Scotts Turf Builder Bonus S Southern Weed & FeedF2 kills over 25 listed lawn weeds, including dollarweed, clover, dandelion, oxalis, chickweed, henbit, and purslane. In addition, the added fertilizer thickens grass to crowd out future weeds and help prevent runoff. Ideal for use on St. Augustinegrass (including Floratam), Centipedegrass, Zoysiagrass, and Carpetgrass only. Apply when grass and weeds are actively growing. Manufacturer recommends using a spreader to apply this product. For Scotts broadcast/rotary spreaders, use a setting of 5 . For Scotts drop spreaders, use a setting of 11. This product must be watered in immediately after application. Do not apply during winter dormancy period - wait until after the third mowing of the season to apply. Do not apply with a hand-held spreader.