and Deciduous Forest Trees
of Southern Ontario

Largetooth Aspen
Populus Grandidentata

Location in Ontario: Largetooth Aspen grows throughout Ontario.

Largetooth Aspen, University of Guelph Arboretum

Genus Populus: Poplars are fast growing trees with soft wood. The leaves are simple. Flowers are mostly dioecious and appear in early spring. Poplars are pioneer species which grow in a newly opened areas such as after a fire or when land is cleared. Some are successional trees along sand dunes.

Habitat: Largetooth Aspen grows on well drained sandy soil.

Landscape Use: Poplars are fast growing, and often used in rows, as windbreaks, on large properties and farms. They are planted to help stabilize soil and prevent soil erosion. Poplars should not be planted near water lines, septic systems etc. since they produce many spreading roots.

Poplars are a pioneer species, they are the first trees to grow in a newly opened area; after a fire, or when land is cleared. They are also a successional tree along sand dunes.

The leaves are simple and oval with large, uneven teeth.

Largetooth Aspen fall colours


Flowers: Poplars are dioecious, male (pollen) flowers and female (seed) flowers occur on different trees. Flowers are in catkins, and appear in the early spring.

Fruit: The seeds are found in long catkins produced in the late spring. Seeds produce seedlings easily and quickly, provided there is enough moisture. Seeds are produced after 10 years of growth, every 4 to 5 years.

Bark: The bark is dark gray and furrowed with age.

Size: Largetooth Aspen is a small tree, growing up to 20 m.

Wood: Largetooth Aspen wood is light and soft.
Specific gravity: 0.39
Janka Hardness:
420 lb
Wood Comparison Chart

White bark of immature Largetooth Aspen, University of Guelph Arboretum