The Sitka Spruce (Picea sitchensis) is a large coniferous evergreen tree growing to 50-70 m tall, exceptionally to 100 m tall, and with a trunk diameter of up to 5 m, exceptionally to 6-7 m diameter. It is by far the largest species of spruce, and the third tallest conifer species in the world (after Coast Redwood and Coast Douglas-fir). It acquires its name from the community of Sitka, Alaska.