Polypropylene fabric mulch. Fabric mulch allows moisture to pass through to the soil but minimizes moisture loss through evaporation. Mulch should be installed after seedlings have been planted. Pull seedlings through “X” shaped holes (no larger than 6 inches by 6 inches) cut into the fabric (“X” cuts ensure the fabric will not rub against the seedling stem.) The edges of the fabric can be secured with a covering of soil. Wire staples, rocks, etc. can also be used to hold fabric down in place.