The answer to 'mulch weeds' is that applying a layer of mulch around plants can help suppress weed growth. Mulch acts as a physical barrier, blocking sunlight and preventing weed seeds from germinating. It also helps retain moisture in the soil, making it harder for weeds to take hold.
The best time to apply mulch is in the spring or early summer, before weeds have a chance to emerge. Spread a 2-4 inch layer of organic mulch, such as wood chips, shredded bark, or leaves, around your plants. Be sure to keep the mulch a few inches away from the plant stems to prevent rot. Reapply the mulch as needed, usually every 1-2 years, to maintain the protective layer.