Epsom salt is a highly soluble form of magnesium sulfate, two elements that play vital roles in the uptake of phosphorus and nitrogen in plants, and the production of several plant enzymes.
There are many reasons to use Epsom salt (magnesium sulfate) in the garden. It contains magnesium one of what growers call the "major minor" elements. It helps speed up plant growth, increase a plants nutrient uptake, deter pests, increase flavor of fruit and veggies, plus increase the output of vegetation. Its benefits are 1. Improve Seed Germination 2. Increase Nutrient Absorption 3. Counter Transplant Shock 4. Green Up Foliage 5. Prevent Leaf Curling 6. Deter Garden Pests 7. Grow Sweeter Fruit 8. Beautiful, Bountiful Flowers