Pinus wallichiana (Himalayan Pine or Bhutan Pine)


Botanical Information

FamilyPinaceae
GenusPinus
Specieswallichiana
CategoryWoody
TypeTree (evergreen)
OriginHimalayan Mountains including the Annapurna region in western Nepal. Introduced into cultivation in 1827.
Pronunciation

Details

USDA Hardiness Zone4 - 7
USDA Hardiness Ref.
Canadian Hardiness Zone2a - 6b
Canada Hardiness Ref.
RHS Hardiness ZoneH6 - H7
RHS Hardiness Ref.
Temperature (°C)-34 - (-15)
Temperature (°F)-30 - 5
Height10 m
Spread6 - 9 m
GrowthFast
Flowering PeriodMay

Description and Growing Information

General DescriptionA large, gracefully growing specimen.
ID CharacteristicThe needles bend near the base causing the pendulous look.
ShapeUpright broadly pyramidal.
LandscapeUsed as a showy tree in big areas and is excellent as a specimen or accent plant.
PropagationBy seed.
CultivationLikes well-drained, sandy light soils. Will grow best if sheltered from harsh winds.
PestsDamping off, root rot, dieback, blister rust, canker, blight. Scale, pine needle miner, pine weevil, bark beetles and pinewood nematode.
Notable SpecimensThe Niagara Parks Botanical Gardens, Niagara Falls, Ontario, Canada. VanDusen Botanical Garden, Vancouver, British Columbia, Canada.
HabitatElevations between 4000 - 8000 m.
Bark/Stem DescriptionThe bark is initially smooth but develops shallow fissures and flakey plates over time.
Flower/Leaf Bud DescriptionThe winter buds are slightly resinous.
Leaf DescriptionNeedles are 12-20 cm long, soft and found in fascicles of five. Young needles stand straight up while the older ones droop.
Flower DescriptionMonoecious. The male strobili are found low in the crown in dense clusters. The females are found higher in the crown which start off standing up straight but eventually become pendulous.
Fruit DescriptionCylindrical resinous cones that are 15 - 30 cm long. Young cones sit straight up but do become pendulous as they age. The cones are curved much like a banana.
Colour DescriptionThe needles are blue/green in colour. The under part of the needle is a white/blue colour giving the tree a silvery/blue cast. Yellow flowers. Brownish-grey cones.
Texture DescriptionMedium, feather-like needles.

Photographs