Weedblock Mulch Biodegradable Landscape Paper for Organic Gardening (OMRI Listed, Natural Weed Control), 3 feet x 25 feet OMRI listed for organic gardening; Eco-friendly made from renewable resources Thick, absorbent paper blocks weeds for natural weed control; Helps conserve moisture Natural Weed Control for use in seasonal flower beds and vegetable gardens; Can be tilled into soil Allows flow of air, water and nutrients to soil for optimum plant growth while preventing weeds from germinating