Trees

Image
Name
Description
Aspen

Aspen

Populus tremuloides

  • A common North American tree usually 7 to 8m high and as wide as it will have room for
  • Aspen like to form groves which are sometimes quite large
  • Smooth greenish bark on immature wood up to 5 years old
  • Older wood becomes white and furrowed
  • Small roundish leaves with long leaf stems (petioles) that wave in the slightest breeze
  • An interesting early flower, reminds one of a pussy willow when they are young

Landscape Use

Special Conditions

Balsam Poplar

Balsam Poplar

Populus balsamifera

  • Tall poplar to 20m in height found along the river banks of the Bow River
  • Young wood is red to orange, with large buds covered in resin
  • Older wood grey, old bark is fissured
  • Green glossy leaves have a distinct ‘balsam’ odor
  • Female plants have their seed in cottony fluff

Landscape Use

Special Conditions

Douglas Fir

Douglas Fir

Pseudotsuga menziesii

  • Tall majestic tree up to 15m in height
  • Pyramidal until maturity, when the top becomes broad-headed
  • Deeply furrowed bark on older trees
  • Needles are flat, blunt, fir-like in appearance
  • Small cones with distinctive bracts hang down (unlike fir cones)

Landscape Use

Special Conditions

Hawthorne

Hawthorne

Crataegus chrysocarpa

  • A variable plant from a dense thicket 2m high to a more common small tree to 8m high with a broad head
  • Heavily branched with 5cm thorns
  • Young branches are dark red, with an interesting bend at each node
  • Green leaves in summer turn to deep reds and oranges in the fall
  • 1cm red fruit hangs on through the winter

Landscape Use

Special Conditions

Herbert Birch

Herbert Birch

Betula papyrifera

  • Single-stemmed tree up to 10m tall
  • Young branches are deep bronze colour, older wood (5 year) starts to get white
  • Small fine-textured leaves give a light mottled shade
  • Non-persistent catkins are desired by our small winter birds
  • Bright yellow fall colour

Landscape Use

Special Conditions

Limber Pine

Limber Pine

Pinus flexilis

  • Broad-headed tree 7m tall by 6m wide when mature
  • Flexible grey stems on younger wood
  • Blue-green needles in bundles of five
  • Large sticky cones mature early September

Landscape Use

Special Conditions

Lodgepole Pine

Lodgepole Pine

Pinus contorta

  • Tall often narrow tree up to 25 to 30m in height
  • Dark green needles in bundles of two, 6 to 8cm long
  • Small cones have sharp bract on scales
  • Cones usually hang on for several seasons

Landscape Use

Special Conditions

Paper Birch

Paper Birch

Betula papyrifera

  • Single-stemmed tree up to 10m tall
  • Young branches are deep bronze colour, older wood (5 year) starts to get white
  • Small fine-textured leaves give a light mottled shade
  • Non-persistent catkins are desired by our small winter birds
  • Bright yellow fall colour

Landscape Use

Special Conditions

Paskapoo Poplar

Paskapoo Poplar

Populus balsamifera Paskapoo

  • A dwarf poplar only 7m high and as wide
  • Very lateral branching habit makes it resistant to spring snow damage
  • Young wood dark red, tight buds with short internodes
  • Shiny dark green leaf with a strong ‘balsam’ odor
  • Very stumpy, dwarf characteristic
  • Interesting male flower in the spring if you watch for it

Landscape Use

Special Conditions

Pincherry

Pincherry

Prunus pensylvanica

  • Bushy, often multi-stemmed tree to 6m tall
  • Shiny red bark in the winter
  • Shiny narrow green leaves turn orangey-red in the fall
  • Delicate masses of white flowers appear in early spring before leaves
  • Small bright red fruit mature late in summer

Landscape Use

Special Conditions

River Alder

River Alder

Alnus tenuifolia

  • A small multi-stemmed tree to 8 m high
  • Dark green furrowed leaf
  • Persistent catkins are small and attractive
  • Smooth grey bark

Landscape Use

Special Conditions

River Birch

River Birch

Betula occidentalis

  • Multi-stemmed tree to 7m tall
  • Very narrow upright small footprint
  • Bark is usually a bronzy dark red in winter; younger twigs are fine and red
  • Leaves are small and fine-textured in the summer
  • Bright yellow fall colour

Landscape Use

Special Conditions

Rocky Mountain Maple (Trial)

Rocky Mountain Maple (Trial)

Acer glabrum

  • Small-headed, multi-stemmed tree to 6m high
  • Grey twigs on older wood, bright red twigs on young wood
  • Distinctive maple leaf turns orange in the fall
  • Seed is a samara with red wings in the fall

Landscape Use

Special Conditions

Tamarack

Tamarack

Larix laracina

  • Tall narrow tree to 10m high
  • Brown twigs in the winter with a conical silhouette
  • Bundles of soft green needles
  • Cones are very small, 1 cm long
  • Turns a vibrant yellow in the fall, right before leaf shed

Landscape Use

Special Conditions

Western Mountain Ash (Trial)

Western Mountain Ash (Trial)

Sorbus scopulina

  • Small multi-stemmed, upright tree 5-6m tall
  • Stumpy twigs with big fat buds
  • Compound leaves with 12 to 14 leaflets, outstanding fall colour
  • Clusters of white flowers bloom in summer
  • Clusters of orange fruit

Landscape Use

Special Conditions

White Spruce

White Spruce

Picea glauca

  • Large conical tree to 20m tall
  • Narrow to broadly pyramidal shape
  • Bark is grey-brown but not deeply furrowed
  • Stiff small needles are green to bluish in colour
  • Small cones ripen in the fall

Landscape Use

Special Conditions