Sequoia is a type of tree, specifically a REDWOOD, that is native to the western United States. It is one of the tallest and oldest trees in the world, with some specimens reaching over 300 feet in height and living for thousands of years. The Sequoia is an evergreen coniferous tree, meaning it has needle-like leaves and produces cones. It is also known for its thick, reddish-brown bark and its ability to resist fire.