I am starting a late season vegetable garden here in florida.. tomatoes, peppers, etc and a landscaper friend of mine gave me a bag of magnesium sulfate. My question is seeing that i am augmenting the soil in my 5'x16' garden, would it be beneficial or not to add some magnesium sulfate to the soil. I have heard that too much will damage or worse kill the plants because of it's strength. Help.. I just found the joy of gardening this year and don't want to do anything stupid...
Broadcast Epsom salts (magnesium sulfate) at the rate of 0.5 lbs per 100 square feet or 5.0 lbs per 1000 square feet.
My advice is don't do it! If you didn't grow anything before you will not even know if Epsom salts improved your growing conditions or may be the opposite is true. During our garden tours here in the Kootenays I have seen many vegetable gardens with seemingly good soil and an astonishingly poor vegetation.
Florida's skeletal sands require micro-elements not necessary in richer soils. The 50" of rain wash out most elements, so even if not really necessary it'll be long gone in one or two growing seasons.
