Epsom salts will not build up in your soil or poison your groundwater, yet will yield stronger seedlings, more bountiful blooms, tastier fruits, decreased pest damage, and increased resilience.
Magnesium boosts seed germination by strengthening cell walls and providing increased energy for growth. Sulfur is easily lost during the germination process, so apply a drench of one tablespoon of Epsom salts for every gallon of water to the soil after seeding. Alternately, you can mix one tablespoon of Epsom salts into each hole before planting seeds. For grass seeds and wildflowers, sprinkle one cup Epsom salts per 100 square feet, blend into the soil, and water thoroughly.
Transplanted roots need tender care. To prevent root shock, which causes wilting and leaf discoloration, mix one tablespoon of Epsom salts for every one gallon of water and apply to the roots of newly re-potted plants until saturated. Or try adding one to two teaspoons of dry salts directly to the hole before transplanting a bush or flowers. After tamping down the soil, water thoroughly.
Mineral deficiencies can interfere with photosynthesis, leaching green color from leaves and interfering with nutrient absorption. If more mature foliage is turning yellow and curling, this may indicate a magnesium deficiency. Try a foliar spray of one tablespoon of Epsom salts mixed with four cups of water for each foot of plant height. Magnesium absorbs well if applied directly to the leaves.
If your soil tests positive for magnesium deficiency, Epsom salts will help your lawn achieve maximum growth and lushness. The Epsom Salt Council recommends applying three pounds of salts for every 1,250 square feet of lawn with a spreader. Sprinkle the salts lightly, then water your lawn with a hose or sprinkler system.