Layers One of the big lessons I have learned in the garden is how to create layers. It is important not only because it makes the garden more interesting but also because it encourages a more natural habitat for birds, insects and animals in the garden. Here in my Northwest garden I have about 6 different layers, the tall trees, understory trees, large shrubs, small shrubs, perennials and ground covers. Old Apple Trees The layer I liked to concentrate on when I was building m