Trembling aspen

Silhouette - trembling aspen
  • Latin name: Populus tremuloides Michx.
  • French name: Peuplier faux-tremble
  • Synonym(s): Quaking aspen
  • Taxonomic Serial Number: 195773
Description

Leaves

  • Leaf - trembling aspen

Form

  • Broadly oval to kidney-shaped
  • Tip abrupt, short, sharp
  • Base rounded
  • Usually hairless
  • Preformed leaves usually broadly oval
  • Neoformed leaves heart-shaped, often larger or smaller than preformed leaves and with more readily visible basal glands

Length

  • 3–7 cm

Colour

  • Upper surface deep green
  • Lower surface paler

Margin

  • Teeth fine, irregular (20–30 per side)
  • Teeth more numerous in neoformed leaves

Petiole

  • Flattened
  • Slender
  • Usually longer than the blade
  • Round in neoformed leaves

Timing

  • 7–10 days earlier than largetooth aspen

Buds

  • Lateral bud and leaf scar - trembling aspen

Form

  • Flower buds larger
  • Leaf buds smaller
  • Conical, pointed, appressed, with the tips curving inward
  • 6–7 scales, shiny, slightly resinous, not fragrant
  • Leaf scars small, triangular

Length

  • 6–7 mm

Colour

  • Dark reddish-brown

Twigs

  • Winter twig - trembling aspen

Form

  • Slender, shiny, round in cross-section
  • Lenticels oval

Colour

  • Dark green or brownish-grey

Flowers

Structure

  • Dioecious

Fruits

  • Fruit capsule - trembling aspen

Form

  • Stalk hairy
  • Capsules narrowly conical, hairless
  • Splitting into 2 parts when mature
  • About 10 seeds

Length

  • Mature seed catkins 10 cm
  • Capsules 5–7 mm

Timing

  • Seeds ripen 4–6 weeks after flowering

Bark

Form

  • Smooth with a waxy appearance
  • Becoming furrowed into long flat-topped ridges
  • Diamond-shaped marks about 1 cm across sometimes occur

Colour

  • Pale green to almost white when young, becoming darker

Wood

Uses

  • Manufacture of oriented strand board and other forms of chipboard

Size

Height

  • To 25 m

Diameter

  • To 40 cm

Maximum age

  • 80 years

Tree form

  • Silhouette - trembling aspen

Forest-grown

Trunk

  • Long, cylindrical, smooth, with little taper
  • Branch-free in the lower part

Crown

  • Short, rounded

Root system

Shallow, very wide-spreading

Habitat

Site

  • A great variety of soils
  • Prefers sheltered sites

Associated species

  • Often in pure stands; also mixed with white spruce, black spruce, balsam fir, white birch, balsam poplar and jack pine

Range

Throughout the forested areas of Canada

Insects and diseases

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

Photos
  • Trembling aspen
  • Trembling aspen
  • Trembling aspen
  • Trembling aspen
  • Trembling aspen
  • Trembling aspen
  • Trembling aspen
  • Trembling aspen
Distribution map
Distribution map - trembling aspen
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