Bosmere Tree Protection Weed Mats, 24", 3-Pack Made from natural coco fiber and natural latex that allows water, air and nutrients to get to the roots of the shrub or tree More effective at stopping weeds growing than bark mulch Made from natural coco fiber and natural latex that allows water, air and nutrients to get to the roots of the shrub or tree Can be mowed over Protect the tree trunk from mower or trimmer damage, keep down weeds and maintains a neat appearance in the landscape Made from half inch thick natural coco fiber that allows water, air and nutrients to get to the roots of the shrub or tree More effective at stopping weeds growing than bark mulch Can be mowed over