Picea glauca, commonly known as white spruce, is a species of evergreen tree native to the northern regions of North America. The tree is known for its conical shape, blue-green needles, and ornamental value.

White spruce trees can grow up to 60-80 feet tall, with a trunk diameter of up to 2-3 feet. The tree's needles are about 0.5-1 inch long, stiff, and sharp. They are blue-green in color and give off a slightly resinous fragrance when crushed. The cones of the white spruce are cylindrical and hang downwards from the branches.

In addition to its ornamental value, white spruce is also commercially important. The tree's wood is used for lumber, pulpwood, and as a source of paper. The tree's needles are also used to make spruce beer, a traditional beverage that was once popular in North America.

White spruce trees are relatively easy to grow and are adaptable to a variety of soil types. They prefer full sun to partial shade and require regular watering. The tree's conical shape and blue-green needles make it a popular choice for landscaping and as a Christmas tree.

Overall, Picea glauca is a versatile and valuable tree that provides both ornamental and commercial benefits. Its conical shape, blue-green needles, and commercial uses make it a popular choice for a variety of applications, from landscaping to paper production.