kids encyclopedia robot

Populus facts for kids

Kids Encyclopedia Facts
Quick facts for kids
Populus tremula 002.jpg
Foliage of Populus tremula
Scientific classification
Type species
Populus tremula
Populier mannelijke bloeiwijze (Populus canadensis male inflorescences)
Male catkins of Populus × canadensis

Populus is a genus of trees common in the northern hemisphere. They are commonly called poplars. The genus has 25–35 species in three sub-groups, commonly called poplars, aspens, and cottonwoods.

In the September 2006 issue of Science, it was announced that the Western Balsam Poplar (P. trichocarpa) was the first tree to have its full DNA code sequenced.


The flowers are mostly dioecious (rarely monoecious) and appear in early spring before the leaves. They are borne in long, drooping catkins. The male flowers have a group of 4–60 stamens on a disk. The female flower is a single-celled ovary in a cup-shaped disk.

Pollination is by wind. The fruit is a two to four-valved capsule, green to reddish-brown, mature in mid summer. It contains tiny light brown seeds surrounded by tufts of long, soft, white hairs which help wind dispersal.


Poplars of the cottonwood section are often wetlands or riparian trees. The aspens are among the most important boreal broadleaf trees.

Poplars and aspens are important food plants for the larvae of a large number of Lepidoptera species. Pleurotus populinus, the aspen oyster mushroom, is found exclusively on dead wood of Populus trees in North America.

Images for kids

Black History Month on Kiddle
Famous African-American Athletes:
Jackie Robinson
Jack Johnson
Althea Gibson
Arthur Ashe
Muhammad Ali
kids search engine
Populus Facts for Kids. Kiddle Encyclopedia.