EPSOM SALT AS GARDEN AID: TRUTH OR MYTH?
There are times when garden advice is spot-on, and other times when a garden tip attains urban myth status. The Epsom salt tip falls somewhere in between. Epsom salt has long been touted as a preventative for blossom end rot, as a treatment for pest control, as an aid for encouraging rose blooms, and as a fertilizer — but are any of these claims true?
First, let's take a look at what Epsom salt is, exactly. It's a chemical that consists of magnesium and sulfur. It also contains water, but it's a crystalline form, so the water content is not significant. Although plants do need magnesium to grow, they don't need much of it, so magnesium by itself is not usually something that is necessary to add to your soil. Plants also need sulfur but, as with magnesium, they don't need much in order to thrive.
So should we use it or not? Here are some good tips, facts, and recommendations for Epsom salt use in the garden — as always, it's good to make garden decisions based upon solid knowledge and research rather than myth or well-intentioned neighborly advice.