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Weeds and Plant Identification
Common cottonwood - Populus deltoides

Cottonwood tree

New growth

Seedling

Seeds

Glands
 
 

 
Common cottonwood Populus deltoides Marshall
Salicaceae (Willow family)
 
Life cycle
Fast-growing, weedy tree.
 
Leaves
Alternate, simple, broadly triangular, 3 to 5 inches long with coarse, incurved-toothed margins and a smooth base. Leaves are shiny green above and have two to five prominent, fingerlike glands where the long, flattened petiole attaches to the leaf. Margins are outlined by a colorless border.
 
Stems
Up to 100 feet at maturity with a straight trunk and minimal branching. Bark is ash gray on mature trees and greenish yellow on young stems. Plants have the ability to form many vigorous, weedy sprouts.
 
Flowers and fruit
Male and female flowers are found on separate plants and are clustered in drooping, up to 4-inch-long spikes. Male flowers are reddish; female flowers are greenish. Fruit are three- to four-valved capsules that release cottony, wind-disseminated seeds.
 
Reproduction
Seeds.

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