The best way to make your backyard or outdoor lighting truly natural is to integrate some stuff that carry natural-inspired pieces. Something perhaps like this branch lamp, something made of birch.
The White Birch Branch Lamp comes from Urban+Forest, a single tree branch that sticks out via plague of wood. It carries a single bare light bulb which you can hang gracefully anywhere such as rivets, a lighting solution that should easily blend in with your outdoor setting.
As fuss-free as possible, this carefree lamp can be mounted on the wall, reaching out over a desk, or it can be made to stand on the ground casting its light throughout the room.