Populus tremuloides

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Description

Populus tremuloides is a widespread pioneer species native to North America, ranging from the mountains of northern Mexico all the way to Alaska. In its natural habitat, this tree grows together with species such as Acer saccharum, Populus grandidentata and Tilia americana. The species grows larger than Populus tremula, reaching a height of approximately twenty to twenty five meters and a width of seven to nine meters. It develops an oval, semi open crown.

The leaf margin of Populus tremuloides is much finer and more evenly toothed than that of Populus tremula. Otherwise, the leaves are quite similar: round to ovate, with a pointed tip and roughly the same size. They also produce the same characteristic trembling or rattling sound in the wind. Populus tremuloides can be recognized by the bark of young trees and branches. At first glance the bark appears white and smooth with black markings, but on closer inspection it is often more yellow gray or pale yellow than that of the European aspen. Both male and female trees produce catkins before leaf emergence. These catkins are smaller and more slender than those of Populus tremula. Female trees release their seeds in summer by means of abundant cotton like seed fluff from the capsules.

The American aspen prefers moist, humus rich soils that are acidic to neutral, but it is quite tolerant as long as soils are not extremely dry or permanently wet. The species produces fewer root suckers than Populus tremula. Even so, in nature it still spreads more often through root suckers than by seed, resulting in groves consisting of a single clone. In Canada, Populus tremuloides is widely used as a timber species for the paper industry.

Types of planting

Tree types

standard trees multi-stemmed trees

Use

Location

park central reservation large garden countryside

Pavement

none

Planting concepts

landscape planting urban planting

Characteristics

Crown shape

ovoid

Crown structure

semi-open

Height

20 - 25 m

Width

7 - 9 m

Winter hardiness zone

2A - 8B

Aspects

Soil

sabulous clay light clay sand loamy soil

Nutrient level

rich in nutrients

Soil moisture level

moist

Light requirements

sun

Extreme environments

tolerant to dryness

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Photos

Magnify

standard tree

woodland planting stock

flowers

leaves

autumn leaves

bark

Flowers

catkins discrete

Flower colour

yellow-green

Flowering period

April - May

Leaves

Leaf colour

green

Leaves

deciduous ovoid deltoid polished dentate

Autumn colour

golden yellow

Fruits

Fruit colour

yellow-brown

Fruits

discrete

Bark

Bark colour

white black

Bark

slightly furrowed

Twigs

Twig colour

pale grey

Twigs

bare

For and by green professionals

The TreeEbb is a platform for and by green professionals, in which we collect knowledge and experience from the sector and make this available for users. All the details and photos are free to use for non-commercial purposes. Want to share your tree knowledge? Send photographs and additional information to treeebb@ebben.nl

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Winter hardiness

A plant's winter hardiness is the coldest area in which it is frost-resistant. This is based on the average annual minimum temperature. Winter hardiness zones are thirteen different frost zones in steps of 5.5 degrees Celsius. This format is an international standard for the hardiness of plants. The zones in which the plant is frost-resistant are always included in the description of trees and other vegetation.

Winter hardiness is a genetic characteristic and is not influenced by the location in which the plant is cultivated. This means that a plant that has been cultivated for many years in winter-hardiness zone 6 but has a winter hardiness of 3 is perfectly suited for replanting in a colder zone. It will thrive there thanks to its genetic characteristics.

When choosing planting for a project, the winter hardiness of the plants is extremely important. By choosing species that match the zone in which the project is being created, it is possible to ensure that plants can withstand the minimum temperature in that area.

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Populus tremuloides