It's worth a try, some swear by it, can't hurt anything. I've read 2 different posts from another forum, one said 1 teaspoon/gal., the other was 1 tablespoon/ gal. I've been using 2 tablespoons /5 gal.bucket.
I've been using one Tablespoon per gallon with good results. I don't have a routine I follow, I just rotate the epsom salts with my other fertilizing when I remember to. I don't use it in the Fall and Winter out of laziness but probably use it every 3 to 4 weeks in the Spring and Summer.
I add 25 ppm Magnesium = 25 mg/litre to my feeding water and have used it
for all plants for several years.
How much Magnesium Sulphate this corresonds to
depends on the water content of the Magnesium Sulphate (Epsom Salt)
The chemical I use is MgSO4 x 7H2O.
I give my plants a low dose of nutrients ewery time water when they grow and if resting half that dose or stop feeding depending on what plants.
I got the reccomendation to add Mg several years ago from Bob Wallenstein.
For most paphs I also add Calcium (Calcium Nitrate) - about 40 ppm.
Eric, you can buy lime at garden stores. I don't think my local Home Depot/Lowes carries it, but we've got a specialty garden center that does have some and that's where I bought mine. You can also google and find it on the net.
Eric- if you can't get lime (and don't bother from most garden shops...its hydrated lime) get oyster shell from Petland. Calcium Nitrate is sold by Ray Barkalow (First Ray's), which is where I get mine...and as for the taste of epsom salts......well, it is, you know, a..............laxative! Take care, Eric