Epsom Salt makes a good tonic for plants. It supplies readily available Magnesium and Sulphur which are easily leached from the soils by rain, is particularly useful when the lack of nutrients in the soil is causing yellowing of the leaves. Epsom Salt provide good nutrition, also improves plants utilisation of nitrogen, phosphorous, potassium. You can mix a handful in a gallon of water or as I do 2 tablespoons dry round each plant hoe in and let the rain do the rest. I only do this once or twice in a season but takes all the yellow out of the leaves. I use it on my roses and think thats why they stay healthy.

So glad you asked that question, Guest!....I've been meaning to...thank you Drc726!

I have used it for over 30 years and am a great believer in it, but not everyone is!