Pinus densiflora
Common name: 
Japanese Red Pine
PI-nus den-si-FLO-ra
Native to (or naturalized in) Oregon: 
  • Conifer, evergreen tree, 65-130 ft (20-30 m) tall in its habitat, much less in cultivation, possibly 40-50 ft (12-15 m), similar width, often irregular form.  Bark reddish, thin, and exfoliating (somewhat similar to P. sylvestris).  Needles two per bundle, densely brush-like at shoot ends, 6-12 cm long, 1 mm wide, indistinct stomatal lines on both sides, sheath on young needles 15 mm long.  Cones solitary or grouped in whorls, directed outward, short stalk, 3-5 cm long, oval to conical.
  • Sun; well-drained, slightly acid soil.
  • Hardy to USDA Zone (3b) 4      Native to Japan, Korea, and northeastern China.  Over 90 cultivars have been described, probably less than a dozen are commercially available; here are three:
    • 'Golden Ghost'  -  shrub/tree, semi-dwarf, dense, needles in winter are light green but in the spring develop bright yellow to white bands
    • 'Pendula'  -  tree/shrub, branches pendulous, may spread along the ground, needs to staked to be tree-like
    • ‘Umbraculifera’  -  tree/shrub, dwarf, slow growing to 12 ft (3.7 m) or more, mushroom shape, usually multistemmed
  • densiflora: densely flowered, a reference to the large number of cones it produces.
  • Eugene, Univ. of Oregon: northwest of Art Museum.
  • Portland, Hoyt Arboretum.
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  • plant habit

    plant habit

  • needles and cones

    needles and cones

  • trunk, bark

    trunk, bark