Failure to follow the manufacturer's directions may result in plant injury. Spray on cloudy days or in the evening. The application of chelated iron to the soil produces a longer-lasting effect than spraying the foliage. Repeated applications are often necessary to maintain attractive green foliage. The addition of chelated iron is supplemental to regular fertilizer practices for certain plants.
Chelated iron is now available in garden-supply stores.
Carefully follow the manufacturer's recommended application rates. Spray on cloudy days or in the evening. Applications made at recommended times for turfgrass will also benefit those trees and shrubs growing in the turfgrass areas. The broadcasting method is the least expensive and, in certain instances, can be just as effective as subsurface techniques. It is the method most commonly used for shrub or small tree fertilization.