Quote:
Originally Posted by photon
What's on top of the fabric seems to have a much bigger impact.. my parents started putting cedar chips down over the fabric and between their plants and while it doesn't prevent weeds, it sure seems to discourage them more than anything else I've seen.
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In my experience, fabrics buy you a year or two of reasonably weed free landscaping. The cedar chips break down over time and weeds will grow on top of the fabric with the roots growing down through, making them tougher to pull. I end up spraying the fabric areas as much as the non fabric to kill everything but the plants and shrubs.