As it's name suggests, Dr. Iron contains 22% non-staining iron, along with 55% sulphur, to boost iron levels and reduce soil pH. Use non-burning Dr. Iron on lawns, flowers, vegetables, trees and shrubs.
Spread 3 1/2 lbs per 1000 sq. ft. of dry powder on area to be treated. Follow with deep thorough watering to activate it.
Epsom salt is actually magnesium sulfate, a blend of minerals plants need for a stronger root structure and to facilitate the uptake of chlorophyll. Use as an ingredient in organic fertilizer, and in alkaline soils where magnesium deficiciences occur. Recommended by many master gardeners and landscape professionals.