What Is Special About Redwood?

Redwood Species

• The redwood tree is part of the genus that includes the coastal redwood (Sequoia sempervirens) and the Sierra redwood (Sequoia gigantean). These two species of trees are the tallest and longest-lived trees recorded on the planet Earth. The Sierra redwood is the longest-lived organism in existence, while the coastal redwood stretches further into the sky than any other tree.

Age

• Sierra redwoods are considered special because they routinely live between 2,000 and 3,000 years, with some believed to be nearly 4,000 years of age. That is a number that is far beyond that of most other species of trees. While it is impossible to precisely gauge their lifespan, methods are in place that allow scientists to estimate the age of a tree based on the number of "rings" contained within the fallen trunks of trees of comparable size.

Famous Trees

• Yosemite National Park's "Grizzly Giant" is believed to be the oldest living redwood in existence, with an approximate age of 3,800 years. Meanwhile, the "General Sherman" and the "President" both grow in Sequoia National Park and are thought to be nearly the same age as the Grizzly Giant. These trees -- and others -- are part of the folklore of the United States, as millions of people each year flock to get a first-hand look at these gigantic, ancient trees.

Habitat and Lumber

• Redwood forests are also considered special because they are an important natural habitat for endangered species like the northern spotted owl, reports the Arbor Day Foundation. The lumber of the redwood tree is highly valued because it is especially resistant to decay. Additionally, the large mass of each individual tree produces an exceptional amount of lumber, making each tree very valuable.