Some contains trace minerals which are helpful for plants. It does not form a mat, but remains rigid and loose. Often recommended for strawberries at the rate of 2 inches.
Salt hay is difficult to find in central Illinois.
Copyright 1995 by the Board of Trustees of the University of Illinois. The information provided is for educational purposes only. References to commercial products or trade names do not constitute an endorsement by the University of Illinois and do not imply discrimination against other similar products.