Tamarac is a rot-resistant tree akin to spruce. It has little needles that turn brown in the fall and drop off. It makes excellant beams, much like hemlock.
Red pine is one of the most used woods in the country. It is not naturally rot resistant, however, it can be protected and treated to ensure that is it can resist rot.
Titanium is highly corrosion-resistant.
No
Lightweight,dimensionally stable and rot resistant
Redwood and Wolmanized Lumber
Although all wood will rot in due time but pine and oak will last longer
Redwood, cypress, and cedar are termite and rot resistant. These are softwoods and may not last as long as hardwoods.
Terry L Highley has written: 'Micromorphology of degradation in western hemlock and sweetgum by the brown-rot fungus Poria placenta' -- subject(s): Sweetgum, Fungi, Western hemlock 'Controlling decay in waterfront structures' -- subject(s): Waterfronts, Inspection, Maintenance and repair, Wood, Deterioration 'Properties of cellulases of two brown-rot fungi and two white-rot fungi' -- subject(s): Brown rot, Wood-decaying fungi
The disadvantages of Ash wood is that it is not as rot proof or water resistant as other hard woods. If it is left untreated, it will rot quickly.
PRESSURE TREATED WOOD, CEDAR, REDWOOD
Cedar doesn't rot because it is water resistant and if it isn't sealed it will last you pretty long. It can last up to 8 years if not sealed *After "8 years" then what? Cedar rots like any other wood if you wait long enough. How long depends on factors such as how much water can get trapped where two cedar parts touch or how severely it is constantly dried out (dry rot).