What wood last longest outdoors?

1. Teak: Teak is a tropical hardwood that is naturally resistant to rot, decay, and insects. It contains high levels of natural oils and resins that make it water-resistant and durable. Teak is commonly used for outdoor furniture, decking, and boat building.

2. Redwood: Redwood is a softwood that is native to the Pacific coast of North America. It is highly resistant to rot, decay, and insects due to its high levels of natural oils and resins. Redwood is often used for outdoor furniture, decks, and siding.

3. Western Red Cedar: Western red cedar is a softwood that is native to the Pacific Northwest of North America. It is naturally resistant to rot, decay, and insects. Western red cedar is commonly used for outdoor furniture, decks, siding, and shingles.

4. Black Locust: Black locust is a hardwood that is native to the eastern United States. It is highly resistant to rot, decay, and insects. Black locust is often used for fence posts, deck posts, and other outdoor structures.

5. Ipe: Ipe is a tropical hardwood that is native to South America. It is extremely dense and hard, making it resistant to wear and tear. Ipe is also highly resistant to rot, decay, and insects. It is commonly used for decks, boardwalks, and outdoor furniture.

6. Brazilian Walnut (Ipe): Brazilian walnut, also known as ipe, is an extremely hard and dense tropical hardwood. It is highly resistant to rot, decay, and termites, making it ideal for outdoor use. Brazilian walnut is commonly used for decking, siding, and outdoor furniture.

7. Garapa: Garapa is a tropical hardwood that is native to South America. It is highly resistant to rot, decay, and insects. Garapa is commonly used for decks, siding, and outdoor furniture.

8. Tigerwood: Tigerwood is a tropical hardwood that is native to South America. It is highly resistant to rot, decay, and insects. Tigerwood is commonly used for decks, siding, and outdoor furniture.

It's important to note that even the most durable woods will eventually deteriorate if not properly maintained. Regular cleaning, sealing, and maintenance are necessary to extend the lifespan of outdoor wood structures.