Fall mulching has several benefits: Insulates the Soil: A layer of mulch can help insulate the ground, protecting plant roots from freeze-thaw cycles in winter and maintaining more consistent soil temperatures. Retains Moisture: Mulch helps retain moisture in the soil, reducing the need for winter watering. Suppresses Weeds: Applying mulch can help suppress the growth of winter weeds. Adds Nutrients: As organic mulch decomposes, it adds nutrients back into the soil, improving its fertility for the next growing season. Prevents Erosion: Mulch can help prevent soil erosion from rain and wind during the winter months.