This biodegradable mulch stops sunlight reaching the soil therefore stopping weeds. It creates a micro climate improving root growth and plant establishment. This totally bio-degradable mulching film is made from non-GM plant starch and is compostable. The mulch breaks down entirely by microbial action, rather than by oxidation or light. It lasts for up to 16 weeks. Post-harvest, any remaining film can be simply dug into the soil.