Mike said: " If your soil is deficient of magnesium or sulfur, then Epsom salts will add these nutrients to the soil. But neither of these nutrients are deficient in most well-tended garden soils. The thing is, unless you do a soil test, you'll never know if your soil lacks magnesium and sulfur . . . "
He's so right!
Years ago, all of the Rose Experts here pushed the use of Epsom Salts . . . so we dutifully did that. Until we tested our soil and water . . . And learned that our crappy water had a natural high level of magnesium and sulfur.
(I should have guessed. A man from the water co. once asked me: "You don't DRINK this water, do you, lady?")
Obviously, we no longer use Epsom Salts!
