Spread these irregular coin-size chips of slate over vegetable and flower beds to prevent foreign objects from contaminating your soil, promoting strong and even growth for an extended harvest. Ideal for raised bed plantings, particularly in high traffic and urban areas. The slate chips - much of which are sourced from old barn roofs and stone walls - provide an excellent use for the remnants of a valuable and attractive material. 100% recycled material. Quarried by a family-run company in upstate New York. Contained in a heavy-duty, cinch-top burlap bag. 3 lb. total weight. Available in medium and fine sizes. Made in USA. A Williams-Sonoma exclusive.