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Canadian poplar

Populus canadensis · Salicaceae

The gardener's calendar

The right move for September

In autumn, ease off feeding and take the chance to clean up around canadian poplar and prepare for winter.

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ID card

Foliage
Deciduous
Flowering
Spring (catkins)
Adult size
25 to 30 m tall, 10 to 15 m wide
Growth
Very fast
Hardiness
-25°C
Origin
Natural hybrid (North America)
Soil type
Fresh to moist, well-draining

Care

Exposure

The Canadian poplar thrives in full sun, with at least 6 to 8 hours of direct light per day. It tolerates partial shade but its growth will be slowed. Plant it in an open location, away from fragile structures, as its final size is imposing.

Watering

Water regularly during the first year after planting to encourage root establishment. Once established, the Canadian poplar resists dry periods well thanks to its deep root system. During prolonged drought, weekly watering remains beneficial, particularly at the start of the season.

Soil and planting

This poplar prefers fresh to moist, well-draining soil. Enrich the soil with organic matter at planting time. It tolerates slightly acidic to neutral soils and adapts to riverine or peri-urban environments, which explains its frequent use in landscaping.

Pruning and training

The Canadian poplar requires little pruning once established. Remove dead or poorly oriented branches in late winter or early spring. In its youth, light training can improve its shape. Avoid severe pruning which stresses the tree.

Fertilization

Thanks to its very rapid growth, it consumes a lot of nutrients. An application of balanced fertilizer in spring, or annual mulching rich in organic matter, supports its vigor. Poor soils benefit from moderate fertilization each year.

Diseases and pests

The Canadian poplar can be affected by foliar fungi (rust, anthracnose) in very humid conditions. Willow (Marssonina), aphids and certain weevils can parasitize it. Good drainage and adequate aeration reduce risks. Consult a specialist if severe symptoms appear.

Did you know?

The Canadian poplar is a hybrid born from the fusion of the American black poplar (Populus deltoides) and the balsam poplar (Populus balsamifera), discovered in France in the 18th century. Its exceptionally rapid growth made it the tree of choice for road alignments and reforestation efforts in 19th-century Europe. It is a true champion of CO₂ absorption, capable of growing more than one meter per year under good conditions.

Where to buy it

Best planted in autumn so the roots settle in before summer, or in early spring once the frost has passed. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, October, November.

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Tips generated and checked by Viridia — adapt them to your local climate.