PLANT FOOD AMMONIUM SULFATE 21-0-0 24% SULFUR Can be used on lawns, gardens, flowers, trees and shrubs. Outdoor Garden: Use 1 tablespoon for every square foot of ground.Container Plants: Use 1 tablespoon for every 12″ diameter potted container. Apply evenly to dry soil and rake into the top 1-2″ of soil, then water thoroughly. Use every 3-4 months as needed. Total Nitrogen (N) – 21% Sulfur (S) – 24% Derived from: Ammonium Sulfate.This NITROGEN and SULFUR fertilizer can be used on areas where you already have high levels of phosphorus and potassium. This fertilizer can be used on Lawns, Gardens, Flowers, Shrubs, Hedges, and Trees. Listed below are general guidelines for use.1 Cup = 0.5 Lbs. 1 Quart = 2 Lbs. 1 Gallon = 8 Lbs. ESTABLISHED TURF: apply 5-7 lbs per 1000 square feet. Topdress and water in 4-5 lbs per 1000 square feet every 8-10 weeks as needed during the growing season. To avoid fertilizer burn, never apply the fertilizer to wet grass and always water in after the application. GARDEN: In the spring apply and incorporate into soil just before planting 1 lbs per 100 square feet. Topdress and water in another 0.4-0.5 lbs per 100 square feet four to five weeks later on high nitrogen crops such as corn, potatoes, and onions. However, do not topdress your tomatoes, squash, watermelons, and especially beans. FLOWERS: Apply 0.5 pounds per 100 square feet (10 X 10 feet) and work well into soil before planting. Apply an additional 0.5 pound per 100 square feet every 12 weeks, mixing lightly with topsoil, making sure not to disturb the roots. Water thoroughly after each fertilizer application. SHADE, FRUIT AND NUT TREES: For an under the tree limb surface fertilizer application,apply 0.5 pounds per inch of the trunk?s diameter. Measure the trunk diameter five feet from the ground. Apply this fertilizer rate in early spring and again in late summer. SHRUBS AND HEDGES: Apply in the spring, after danger of a killing frost is past, 0.5 pounds per 100 square feet (10 X 10 feet) and work lightly into the soil. Water thoroughly after application. Repeat this application in early summer.