What can you do with leaves that are beginning to fall? The obvious answer is to compost them, but Leaf Mold is a great soil amendment in it's Leaf Mold is a great soil conditioner, and all you need are fallen leaves and some patience. It can be compared to peat moss for its water-holding capabilities, but it's easily renewable. Though it doesn't provide much for nutrients, it is a great way to build your soil fertility. Read more about making leaf mold.