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We may receive a commission on purchases made from links. Canopy trees form the tallest layers in a forest or woodland, and are usually at least 30 feet tall, hanging over understory trees, shrubs, ...

Canopy trees form the tallest layers in a forest or woodland, and are usually at least 30 feet tall, hanging over understory trees, shrubs, and herbaceous perennials. If your yard or garden is lacking ...