Juniperus horizontalis Health effects and herbal facts
American savin creeping juniper creeping savin juniper creeping-cedar prostrate juniper shrubby red-cedar Waukegan juniper
Juniperus horizontalis is a low-growing shrubby juniper native to northern North America, throughout most of Canada from Yukon east to Newfoundland, and in the United States in Alaska, and locally from Montana east to Maine, reaching its furthest south in Wyoming and northern Illinois.
It lives up to both its scientific and common names, reaching only 10-30 cm tall but often spreading several metres wide. The shoots are slender, 0.7-1.2 mm diameter. The leaves are arranged in opposite decussate pairs, or occasionally in whorls of three; the adult leaves are scale-like, 1-2 mm long and 1-1.5 mm broad. The juvenile leaves are needle-like, 5-10 mm long. The cones are berry-like, globose to bilobed, 5-7 mm in diameter, dark blue with a pale blue-white waxy bloom, and contain two seeds; they usually have a curved stem and are mature in about 18 months. The male cones are 2-4 mm long, and shed their pollen in early spring. It is dioecious, producing cones of only one sex on each plant.
It is closely related to Juniperus virginiana, and often hybridizes with it where their ranges meet in southern Canada. Hybrids with Juniperus scopulorum also occur.
Economic importance of Juniperus horizontalis
- NORTHERN AMERICA
- Subarctic America: Canada - Northwest Territory, Yukon Territory ; United States - Alaska
- Eastern Canada: Canada - New Brunswick, Newfoundland, Nova Scotia, Ontario, Prince Edward Island, Quebec
- Western Canada: Canada - Alberta, British Columbia, Manitoba, Saskatchewan
- Northeastern U.S.A.: United States - Maine, Massachusetts, Michigan , New York, Vermont
- North-Central U.S.A.: United States - Illinois , Iowa , Minnesota, Nebraska , North Dakota, South Dakota, Wisconsin
- Northwestern U.S.A.: United States - Montana, Wyoming