Fall feeding is one of the most critical feeding times. A healthy and stable plant can endure the hardship of winter better than a weak plant. Winterizer builds winter hardiness, stem strength and disease resistance in lawns, trees and shrubs. Application Rates: Lawns: 20 lbs. per 5,000 sq. ft. Trees: 1 lb. per inch of trunk diameter around drip line. Shrubs: 1 cup per 3 ft. of height around drip line. Please read and follow label directions.