The Assiniboine poplar (Populus x Assiniboine) is a fast-growing, hybrid poplar tree known for its upright, columnar form. It features broad, triangular to diamond-shaped leaves that are dark green on the upper side and pale green on the underside. The bark is smooth and grey when young, becoming darker and furrowed with age. This poplar hybrid is widely recognized for its tolerance to cold climates, often found in areas with harsh winters.
- Size: Height: 50-60 feet (15-18 meters)
- Spread: 30-40 feet (9-12 meters)
- Sunlight: Full sun
- Soil: Well-drained, tolerates a variety of soil types
- Watering: Requires regular watering when young; once established, it is more drought-tolerant
- Pruning: Prune in late winter or early spring to maintain shape and remove dead or damaged branches
- Spacing: Plant 20-30 feet apart to allow for mature spread
- Pest/Disease: Watch for aphids, leaf rust, and cankers
- Growth rate: Fast, providing quick shade or windbreak benefits