Premium Mulch in WALS bag is mix of shredded pine and spruce. This mulch smells great and is a rich dark brown color and is more resistant to discoloration. The shredded nature of this product makes it one of the most wind resistant mulches. Mulching is a natural way of keeping weeds from growing in your flower beds and other landscape gardens. Premium mulch in WALS bag will help your soil to retain vital moisture in the hot summer days and help regulate temperature during winter cold temperature and early fall frost.