Landscape fabrics screen out weeds

FEW GARDEN CHORES must be done with such irritating regularity as weeding aroun permanent landscape plants. But there is an alternative to chemical controls an constant labor. You can install landscape fabrics over the soil and around plants. The best of these synthetic fabrics provide a much more effective barrier to weeds than organic mulch alone.

The fabrics are made of woven polypropylene, spun-bonded polyethylene, or a combination of other synthetic materials.

The denser the fabric the better it suppresses weeds. However, because the fabric is porous, it allows air, water, and nutrients in solution to reach the soil. The density and porosity of the fabric vary by manufacturer.

Landscape fabrics are best used in permanent plantings around trees and shrubs. They aren't really suited for use in beds where you change plants often (annual and vegetables).

You can install these fabrics around existing plants or cut slits in them to accommodate new plants.

INSTALLATION

Before you install the fabric, make sure the soil is free of weeds. Eliminate them by repeated cultivations or by applying an herbicide such as glyphosate.

Wait for a calm day to install the fabric (on windy days, it will sail around).

Unroll the fabric and estimate where to cut the material. Use a sharp knife or scissors to cut slits (Xs work best), then carefully fit the fabric over or around the plant. Overlap seams by at least 3 inches to close any gaps. To anchor the outer edges of the fabric to the soil, you can use plastic pegs, nails, or heavy wire staples.

After installation, cover the fabric completely with 2 to 3 inches of a weed-free organic mulch such as shredded bark. The mulch protects the fabric from ultraviolet degradation and helps conserve soil moisture. Keep the mulch free of weeds. Use liquid fertilizer to feed plants through the fabric.

Landscape fabrics are sold in nurseries and garden supply centers. They are available in various widths and lengths; a 3-foot-wide, 50-foot roll costs abou $13.