Separation fabric is a heavy material used in horticultural or construction projects to prevent rocks and mulch from sinking into the soil. Weed block is a lighter weight landscape cloth used in planting areas to prevent the growth of weeds, as well as keep mulch from sinking into the soil.
About this Author
Melody Lee worked as a newspaper reporter, copywriter and editor for 5 years. In addition, she has edited magazine articles and books. Lee holds a degree in landscape design and is a Florida master gardener. She has more than 25 years of gardening experience, which includes working at nurseries and greenhouses.