Spruces are prized for their color and distinct form that holds up well even with age. White spruces are symmetrical, formal-looking trees with strong wood and dense foliage made up of short, square needles. They’re more spire-like than their Colorado Blue cousins. White spruces are bred from trees native to the Northern US and Canada, making them very cold tolerant. Yukon Blue is a dense, pyramidal selection grows a little faster than other White Spruces, with bluer color. Performs best in cooler areas, so avoid southwestern exposures.They prefer moderately moist, well-drained soil but perform well in clay soils of the Midwest. They can be planted in most average soils in the area with enough moisture during establishment. Avoid pruning lower branches, they will help shade and cool the soil.Because they’re slow growing, Spruces form a dense habit that rarely needs pruning. If needed, prune just the new growth in the spring as it is forming.