Pinus pumila
Common name: 
Japanese Stone Pine
Dwarf Siberian Pine
PI-nus PU-mi-la
Native to (or naturalized in) Oregon: 
  • Conifer, evergreen shrub, more or less prostrate, lacking a main stem, about 2-10 ft (0.5-3 m) high, similar width.  Leaves (needles), 5 per bundle, very densely arranged, 4-7(10) cm long, more or less appressed to the branch, margins widely serrate, very blue green above due to 5-6 conspicuous stomatal lines, dark green below without stomatal lines.  Male cones (flowers) deep red, conspicuous; female cones grouped several together, nearly terminal, 3.5-4.5 cm long, about 2.5 cm wide, purple-violet when young, reddish or yellowish-brown when ripe.
  • Sun.
  • Hardy to USDA Zone 5 (sometimes listed as low as 1)     Native to Japan, Manchuria, N. Korea, N. Mongolia, Siberia east from Yenisey River, China (Heilongjiang, Jilin, Nei Mongol, at 1000-2300 m elevation).
  • A few cultivars available, including 'Dwarf Blue'  -  prostrate shrub, broad growing, stout branches, needles gray-blue
  • pumila: dwarf.
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