Mypex Ground Cover Mypex Ground Cover is a multi-purpose woven fabric designed to function effectively in a wide range of horticultural applications. Unlike conventional ground cover, it offers the grower a number of important advantages. MyPex Ground Cover is manufactured from 100% UV Stabilised polypropylene. It resists tear and puncture and is unaffected by normal extremes of temperature. It is designed to give complete weed suppression in a natural way. MyPex Ground Cover