Technical Abstract: Foliar and drench applications of glycerol were tested at 0, 0.1, 5, 10, 25, and 50 ml.l-1 on ‘Chantenay’ carrot (Daucus carota L.) family Apiaceae. Certain glycerol levels, especially the 1 to 10 ml.L-1 treatments, substantially increased fresh and dry weights of carrots sprayed twice over a 60-day period. For example, fresh weights, dry weights and tuber diam from carrot seedlings sprayed with a solution containing 5 ml.L-1 (5 x 10-2 M) glycerol increased 114%, 175% and 53%, respectively, when compared to untreated carrots. Foliar sprays were administered to corn (Zea mays L., family Poaceae) at concentrations 0, 0.1, 0.3. 0.5, and 1.0 ml.L-1 and spearmint (Mentha spicata L., family Lamiaceae) at concentrations of 0, 1.0, 0.5, and 10 ml.L-1. Beneficial growth results were obtained in both corn and spearmint with certain glycerol concentrations. Glycerol applications can stimulate growth responses in diverse plant species.