About
Alnus ullungdoensis is a sizable, rapidly growing tree that can reach heights of up to 15 meters. It features large, oval leaves with long serrations, displaying a vivid green color. During the transition from winter to spring, it produces numerous yellow catkins, which can grow as long as 10 centimeters.
About the genus
Alnus comprises robust deciduous trees and sizable shrubs characterized by their rounded foliage and, during winter, noticeable catkins.
Growing conditions
- Sunlight
- Full sun, Partial shade
- Soil type
- Chalk, Loam, Clay
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Moist but well-drained, Poorly-drained
- Aspect
- East-facing, North-facing, West-facing, South-facing
- Exposure
- Exposed, Sheltered
- UK hardiness
- H7
Plant details
- Plant type
- Trees
- Habit
- Bushy, Columnar upright
- Foliage
- Deciduous
- Height
- Higher than 12 metres
- Spread
- wider than 8 metres
- Time to full height
- 10-20 years
- Suggested uses
- Wildlife gardens, Architectural, Coastal
Care notes
- Cultivation
- This genus is noted for its ability to thrive in poor, wet conditions and is widely used in land reclamation
- Pruning
- Pruning group 1
- Propagation
- Propagate by seed or hardwood cuttings
- Pest resistance
- May be susceptible to alder sucker and leaf-mining sawflies
- Disease resistance
- May be susceptible to Phytophthora and honey fungus