Greensand is a naturally mined product that contains quite a bit of iron oand other trace minerals. It is good for soils with high pH in that it slowoly decomposes and releases the micros for a green color. It won't burn. If you have never used it before, double the rate on the bag for the first application and use it once in the spring and in the fall.
[This message has been edited by B-1 83 (edited 5/2/2008 10:23a).]