Epsom Salts in the garden
Thanks for contacting Ask an Expert for an answer to your Epsom salts question.
Epsom salts supply both calcium and magnesium to soils. If your vegetables or ornamentals have shown deficiency signs or if a soil test has shown that either of these elements are in short supply, then Epsom salts is a fine material for adding to the garden.
Calcium and magnesium can also be supplied by incorporating dolomite lime. However lime will raise the pH of the soil (make it sweeter or more alkaline). If your soil is too acid, using lime might accomplish both raising the pH and adding two needed elements.
For lots of great information on gardening topics, check out the Oregon State Extension publication site, here.
Good gardening to you.