RyzUp^®, a naturally occurring plant growth regulator product containing gibberellic acid (GA3), can be an effective production tool for cotton growers. Early-season foliar applications of RyzUp can increase leaf surface area, thereby enhancing the photosynthetic potential of young cotton plants. Greenhouse and growth chamber studies were done in 1994, followed by field tests during the 1995 and 1996 growing seasons, to determine the optimum timing of application and the most effective dosage rate. Yield results from Texas indicate that a single application at the 3-5 leaf stage is more effective than either a single application at the 5-7 leaf stage or two sequential applications beginning with the 3-5 leaf stage and ending with the 5-7 leaf stage. Also, banded applications at 2-4 fl oz/A were as effective as a broadcast application at 6 fl oz/A. RyzUp may be tank-mixed with early-season foliar insecticides or fertilizers, and the product may be effectively used to promote rapid plant recovery from hail or wind damage.