Weed mat cloth does not give 100% barrier for weed growth although it does help restrain weed growth considerably. However, weed seeds find mulch or gravel an ideal place to germinate. A homeowner should expect to see weed growth as time goes on. Keeping some herbicide available to use in combat for new weeds is a practical idea. This will help keep rock or mulch beds clean, and insure that your investment looks high-quality for years to come. Use of chemicals will aid in removing unwanted vegetation from the landscape, always follow instructions.