Coarse dust with a particle size 75 microns, up to 3mm. Designed for the maintenance of lawns and field crops. As the product is coarser, absorption of minerals by plants is on a longer term. Mixes well with compost for optimum results.
Figures on the list of Organis Materials Review Institute (OMRI) for use in certified organic farming. Has also been approved by the Pro-Cert certification Agency according to the Canadian and National Organic Standards, as well as by Ecocert according to Canadian Organic Standards.