The United States has a wide variety of forests, but most of the United States is temperate, because of its latitude.
The California Redwood Forest is probably the most iconic of all forests. It harbors some of the largest and oldest trees is the world. The primary species is the Coast Redwood itself (Sequoia sempervirens). It is a coniferous forest.
The forests of the Sierra Nevada range are coniferous forests. The Giant Sequoia grows here as well.