Virginia Tech Dendrology

western juniper Cupressaceae Juniperus occidentalis Hook. Listen to the Latin symbol: JUOC
Leaf: Persistent, scale-like and awl-like (in combination), and mostly ternate (arranged in whorls of 3), although some are decussate (in pairs); appressed tightly to the twig, tips of awl-like needles are free of the twig. Back side of needles are glandular and resin dotted, very aromatic.
Flower: Species is mostly dioecious; rarely monoecious; male cones small, yellow, and terminal; female cones small, ovate, and at ends of branches.
Fruit: Cones are small (about 1/4 inch diameter) and round with smooth, leathery scales; green when young and bluish black when mature, but always covered with white bloom, require 2 growing seasons to mature.
Twig: Round and reddish brown, smooth when young but becoming scaly with age.
Bark: Mature bark is thin (less than 1 inch thick), reddish brown, but weathering to grayish brown with broad, shallow furrows and flattened ridges.
Form: Small, dry-site evergreen tree growing 20 to 60 feet tall and 1 to 3 feet in diameter; trunk is typically short, thick, and many-branched.
Looks like: California juniper - Utah juniper - common juniper - Rocky Mountain juniper
leaf flower fruit twig bark form1 map
Additional Range Information: Juniperus occidentalis is native to North America. Range may be expanded by planting. See states reporting western juniper.
External Links: USDAFS Silvics of North America - USDAFS Additional Silvics - USDA Plants Database - USDAFS Forest Products Lab
All material © 2018 Virginia Tech Dept. of Forest Resources and Environmental Conservation; Photos and text by: John Seiler, Edward Jensen, Alex Niemiera, and John Peterson; Silvics reprinted from Ag Handbook 654