Scientific Name:
Pinus thunbergii
Pronunciation:
PYE-nus THOON-burg-ee-eye
Common Name:
Japanese black pine
Family Name:
Pinaceae
Plant Type:
Conifer
Key ID Features:
Irregular habit, bark dark purple-gray, young shoots yellow-brown shoots, buds grey-brown, covered with silky white hairs; needles 2 per fascicle, 7-13cm long, often twisted; seed cones 4-7cm long x 3.3-6.5cm wide, scales numerous, 18-28mm long x 8-12mm wide, seeds 6mm long with 12-16mm long wing. Conifers.org
Habit:
Irregular, Spreading
Form:
Irregular
Texture:
Medium
Mature Height:
15 - 22m
Mature Spread:
7 - 10m
Origin:
S.E. Asia / Japan / China
Hardiness Rating:
Zone 6: (-23 to -18 °C)
Exposure:
Full sun
Soil/Growing Medium:
Acidic, Well-drained
Water Use:
Low
Landscape Uses:
Specimen plant, Wind break
Additional Info:
Google. Cultivars shown or on campus may include P. ‘Yatsubusa’ (syn. P. 'Sayonara'). Compare to Japanese red pine.
Leaf Morphology:
Form:
Needle-like
Arrangement:
Spiraled, Fascicles
Texture/Venation:
Surfaces:
Colour in Fall:
Green
Shapes:
Acicular
Margins:
Serrulate
Additional Info:
salt tolerant
Inflorescence Type:
n/a (male cone)
Flower Morphology:
Monoecious plant
Colour (petals):
Male cone, No flowers, Yellow, Brown
Flower Time at Peak:
Apr, May
Fruit Type:
Cone (winged seeds)
Fruit Colour:
Green, Brown
Fruiting Time:
Sep, Oct
Additional Info:
Persistent
Bark Morphology:
Moderately fissured
Bark or Stem Colour:
Dark Grey
Leaf Bud Type:
Ovoid
Organ Modifications:
Ectomycorrhizae
Propagation:
Seed, Hardwood cuttings
Maintenance:
Low
Pest Susceptibility:
Nematodes, Rust, Scale insects, Wilt (Deer resistant, Drought tolerant)
Specific Pests:
