When it comes to wood decking, three popular options are redwood, cedar, and pressure-treated wood. Cedar is well-known for its natural resistance to rot, insects, and moisture and its ability to maintain its shape. Redwood is also a durable option but it is more expensive than cedar. Pressure-treated lumber is a more affordable option and it is widely used by deck builders in the United States for its durability and resistance to rot and insects. Ultimately, the choice of wood will depend on your budget, desired aesthetic, and the local climate.