The answer to 'how to care for mulching' is to regularly maintain and replenish the mulch in your landscaping. Mulch is an essential component of a healthy, attractive landscape, but it requires ongoing attention to ensure it continues providing the benefits you want.
Start by applying a 2-4 inch layer of organic mulch, such as wood chips, shredded bark, or pine needles, around your plants, trees, and shrubs. This helps retain moisture, suppress weeds, and insulate the soil. Over time, the mulch will break down, so you'll need to top it up 1-2 times per year, typically in the spring and fall. Be sure to keep the mulch a few inches away from the base of plants to prevent rot.