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Aspen Poplar (Populus tremuloides)
Also known as: trembling aspen
General: Deciduous tree, up to 30 m tall. Trunk is smooth with light green or pale bark. Large trees can have black cracks in the bark at the base. Poplar trees are either male or female — only male trees are observed for PlantWatch.
Leaves & Twigs: Leaves are small (3-7 cm long), light to medium green in colour, and round-shaped with a small, sharp tip.
Flowers & Fruit:
Flowers are found in catkins, which look like soft caterpillars hanging from twigs; blooming is completed before leaves emerge.
Habitat: Aspen is common in both dry and moist woods, but cannot tolerate shade.
Sampling: Tag a male tree for observation (see catkin description)