Native to British Columbia, Montana, Idaho, Washington and Oregon Average life span of 400 years, but have been known to live to 900 years old. USDA Hardiness Zones: 2a, 2b, 3a, 3b. 4a, 4b, 5a, 5b. 6a & 6b Western Larch, Western Tamarack, Mountain Larch, Montana Larch, Larix occidentalis Two year old tree in small nursery pot. Largest Larch tree Native to British Columbia, Montana, Idaho, Washington and Oregon. Average life span of 400 years, but have been known to live to 900 years old. High canopy specimen trees commonly reaching 150-230 feet tall. Tufts of shiny pale green needles that turn gold in the fall before shedding for winter. Thick reddish brown bark Coarse, moist well draining soil Likes sun, highly shade intolerant USDA Hardiness Zones: 2a, 2b, 3a, 3b. 4a, 4b, 5a, 5b. 6a & 6b