Lodgepole pine

Silhouette - lodgepole pine
  • Latin name: Pinus contorta var. latifolia Engelm. Dougl. ex Loud.
  • French name: Pin tordu latifolié
  • Synonym(s): Rocky Mountain lodgepole pine , black pine
  • Taxonomic Serial Number: 529673
Description

Leaves

  • Needle cross section - lodgepole pine
  • Needle bundle - lodgepole pine

Form

  • Needles evergreen
  • In bundles of 2
  • Usually twisted, stiff
  • Very sharp pointed
  • Not spread apart
  • Edges sharply toothed
  • Bundle-sheath persistent

Length

  • 3–7 cm

Colour

  • Dark green to yellowish-green

Buds

  • Terminal and subterminal buds - lodgepole pine

Form

  • Blunt-pointed, resinous

Length

  • To 15 mm

Colour

  • Reddish-brown

Twigs

Form

  • Ridged and grooved
  • Vigorous shoots on young trees usually with 1 or more intermediate nodes bearing loose whorls of side branches

Colour

  • Orange-brown becoming reddish-brown or very dark brown during the second season

Seed cones (mature)

  • Cone scale outer surface (left), seed and cone scale inner surface with winged seed (center), cone scale profile (right). - lodgepole pine

Form

  • Cylindrical to ovoid, sometimes asymmetrical
  • Stalkless
  • At right angles to the branch or pointing back
  • In small clusters at the nodes
  • Usually closed
  • Persist on tree 10–20 years

Length

  • 3–6 cm

Colour

  • Purplish-brown

Structure

  • Scales thickened at the tips, with a curved prickle
  • Usually held closed by a resin bond

Timing

  • Open when exposed to the heat from a wildfire or from direct sunlight

Seeds

Form

  • Often mottled and ridged on one side

Length

  • Seed 3 mm
  • Seed wing about 10 mm

Colour

  • Brownish

Bark

Form

  • Relatively thin, less than 2 cm thick
  • With fine scales

Colour

  • Orange-brown to grey

Wood

Texture

  • Soft and light to moderately hard and heavy

Colour

  • Light yellow to yellowish-brown

Morphology

  • Tangential surface often prominently dimpled

Uses

  • General construction, wood pulp
  • After treatment with preservatives, for railway ties, poles, and mine timbers

Size

Height

  • To 30 m

Diameter

  • To 60 cm

Maximum age

  • 200 years

Tree form

  • Silhouette - lodgepole pine

Forest-grown

Trunk

  • Often straight with little taper, especially in dense stands where the live crown is small

Crown

  • Narrowly conical
  • Branches slender, short

Root system

  • A taproot and lateral roots with vertical sinkers

Habitat

Site

  • Occurs on a wide range of soils and sites, including wet depressions

Associated species

  • Large pure stands are common; their density sometimes restricts normal growth

Range

Yukon through interior British Columbia, into western Alberta and southward

Insects and diseases

Insects and diseases that are found most frequently and/or that cause the most damage in our Canadian forests.

Photos
  • Lodgepole pine
  • Lodgepole pine
  • Lodgepole pine
  • Lodgepole pine
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