For the extreme Gardener the Shake and Grow 40 lb. the bag is for the serious grower or competitive growers! “The Product of Champions” Shake and Grow can be used on all types of plants including flowers, vegetables, trees, shrubs, grasses, roses, palms, indoor plants, tropical plants, cactus and succulents, and giant pumpkins. Apply 4 to 6 shakes every three to four weeks for most plants. Please check out the special instructions for the Atlantic Giant Pumpkins on the Pumpkin Growers page.