i did suggest a chelating agent as well, if you read the first post.....and you never use epsom salt in a large amount (it was 1 to 2 teaspoons, not tablespoons...).....miracle gro is a acidic fert, and the epsom salt helps break up the urea components in the soil that arent soluble...it also opens the roots up where they can be clogged....everyone has their own opinions i suppose....i just share what has worked for me....