Common Name: Koyama's spruce
Hardiness Zone: 2 to 6
Height: 50 to 60 ft
Width: 25 to 40 ft
An evergreen tree that can grow to be 50' to 60' tall and 25' to 40' in width or spread, with a straight round trunk and long, slender, horizontally spreading branches. Its bark is smooth and brown on young trees, turning gray-brown with maturity and exfoliating into thin scales. Older trees have a black-grey color with a rough and scaly texture. Branches are brown with smooth grooves. Needles are a pale green color with a prominent stomata band on each surface. Cones are a reddish-purple color and grow solitary on the terminal shoot of each branch.
Where it grows:
Grow in average, medium moisture, well-drained soils in full sun. Tolerant of light shade. Prefers rich, moist loams. Adapts to both wet and dry sites. Generally tolerant of urban conditions. Regular pruning and spraying are advisable.
How it’s used:
It is occasionally planted as an ornamental tree. The wood is similar to that of other spruces, but the species is too rare to be of economic value.
Where it is native to:
This species is native to Japan, northern Korea, and continental northeast Asia.
American Conifer Society. (Picea koyamae) Found online: https://conifersociety.org/conifers/picea-koyamae/
The Gymnosperm Database. (Picea koyamae) Found Online: https://www.conifers.org/pi/Picea_koyamae.php