The answer to 'when to mulch' is that the best time to apply mulch in your landscaping is in the spring and fall. In the spring, apply 2-4 inches of mulch around your plants, trees, and shrubs to help retain moisture and suppress weeds as the growing season begins. In the fall, a 1-2 inch layer of mulch will help insulate the soil and protect plant roots from freezing temperatures over the winter.
Mulching is an important part of maintaining a healthy, attractive landscape. It provides numerous benefits for your plants, including moisture retention, weed control, and temperature regulation for the soil. Applying mulch at the right times of year ensures your landscape stays looking its best year-round.