Decking manufacturer Robi Decking uses lumber from black locust trees, a native North American species well-known for its natural rot-, decay-, mildew-, and insect-resistance. The material is most comparable to ipe in terms of durability but grows faster at a high density, making the product more sustainable than FSC-certified tropical hardwoods. The company also offers eastern juniper and sassafras decking, and black walnut for high-end screened porches. Pricing ranges from $2.30 to $5.09 per linear foot. robidecking.com
