Expert Gardener All Purpose Plant Fertilizer 10-10-10 40 lb., is for use on trees, shrubs, flowers, and vegetable gardens. Fertilizer formulation created for quick release for beautiful foliage, more vegetables and root growth. When using on flowers and vegetables spread evenly on the bed surface and work into the top 2 to 4 inches of soil surface before planting. For vigorous growth, repeat application every 6 weeks during the growing season working into the soil surface along rows or around plants.