There's good advice here, Brian. The epsom salts are like giving a plant a vitamin for its health. Sulphur is something given to affect a change in the soil, if that is what is needed for the plants growing there.
The only area that I have suitable for martagons is along my driveway. Soil that has 80 years of lime leached into it, and it will keep leaching, so this is where the sulphur comes in. A couple martys seem unaffected by the high pH, as are the irises, daylilies and hostas. Good, healthy soil is the best thing you can do for plants. The most important thing is to know what the likely problem is and why you are having it.
