Weather Resistant Hardwood
Not quite as resistant as these but still defined as resistant or very resistant according to the fpl are more common woods that are widely sold for outdoor use.
Weather resistant hardwood. Left to its own devices the patina of shorea fades from gold to gray over time. Naturally resistant woods that are commercially available include black locust robinia pseudoacacia teak tectona grandis ipe tabebuia spp california redwood sequoia sempervirens and bald cypress taxodium distichum. These have the highest resistance to rot over time. Shorea is a durable dense tight grained hardwood that holds up well under the rough treatment of daily use and inclement weather.
Among exceptionally decay resistant tropical woods are ipe lignumvitae purpleheart and old growth teak. It is also commonly used for cigar boxes and humidors as well as the lining of closets and chests. Teak teak has been referred to as the gold standard for decay resistance. Cedar wood projects normally last more than 20 years sans any rot split or warp.
Cedar is an insect resistant hardwood owing to its natural aromatic scent which makes it perfect for outdoor furniture. Cypress is capable of withstanding the elements without a finish of any kind though a periodic coat of oil will keep the wood looking fresh longer. Because of its ability to withstand weather it is often used for windows and exterior trim. Cypress wood contains a natural preservative that is both rot and insect resistant.
Cedar is also used for indoor furniture like dressers chests. It is also very durable and resistant to termites. Like cedar cypress weathers to a silver gray over time when left unfinished. The following two sections list domestic and tropical tree species whose wood is exceptionally resistant resistant or very resistant and moderately resistant.