White spruce

White spruce (*Picea glauca*) is a coniferous evergreen tree native to northern North America.

White spruce (Picea glauca) is a coniferous evergreen tree native to northern North America. It is one of the hardiest and most widely distributed spruces, occurring across much of Canada and parts of the northern United States. The species is important for timber, pulpwood, shelterbelts, and ornamental planting.

Description

White spruce is a medium to large evergreen conifer with needle-like leaves, a conical crown, and slender cones. The needles are short, bluish-green, and the tree typically has a broad, conical crown. Mature trees commonly reach about 15 to 30 metres in height, though larger specimens occur on favorable sites. The tree typically lives 100 to 250 years, sometimes up to 300 years.

Distribution and habitat

The species is widespread across northern North America, especially in Canada and Alaska, and extends into the northern United States. It is found from Newfoundland west to Alaska and south into parts of the northern United States. White spruce occurs in boreal forest, bogs, uplands, and other cold-region habitats, growing from low elevations to montane sites. It is a boreal forest species with one of the largest ranges of any North American conifer.

Ecology

White spruce is one of the northernmost tree species in North America and is a major component of boreal forest ecosystems. It grows best on well-drained soils but can tolerate a range of site conditions. The tree is moderately shade tolerant.

Uses

White spruce has economic importance as a source of lumber and pulpwood, and its wood is used mainly for pulp, lumber, and general construction. It is also planted as an ornamental, for windbreaks and shelterbelts, and as a Christmas tree.