Scotts Fall Weed and Feed is a lawn care product that promotes healthy grass growth during weed control. The product comes with application instructions, which normally include applying the fertilizer to dry grass, evenly distributing it with a spreader, and watering the lawn following application. The timing of application is also critical, with most instructions advising using the chemical in the fall months when weeds are still actively developing and the grass is in need of nutrients. Scotts Fall Weed and Feed used correctly can result in a lush, green lawn free of weeds.