The Gold Standard of Rock Dust for Remineralization. An all purpose paramagnetic rock dust from the Pioneer Valley. Perfect for direct to ground applications in gardens, raised beds, orchards, lawns, ornamentals, soil or soil-less mixes and composting. For optimum results use between 5-50 lbs./ 100 sq. ft. in tillage, 5-25 lbs./ 100 sq. ft. top dressing. Fortifying compost use 20-25 lbs./ cu. yd. of biomass raw material. For potting mixes use up to 5% by volume.