A weed barrier is a protective layer, usually made of fabric, plastic, or biodegradable material, that is laid over soil to block unwanted weed growth while still allowing desirable plants to thrive. It works by limiting sunlight from reaching weed seeds and reducing competition for water and nutrients. Weed barriers come in different types—woven fabric for durability and breathability, plastic sheeting for maximum suppression, or organic options like mulch paper that decompose over time.
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