About
Alnus cremastogyne is a rapidly growing deciduous tree that can reach heights of up to 40 meters. Its leaves are substantial, measuring as much as 15 centimeters in length, and are robust and green, attached to elongated petioles. The female flowers appear as solitary green cylinders that dangle from the branches. In the fall, the tree does not display any color change; instead, the leaves fall while remaining green.
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
- Clay, Loam
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Poorly-drained
- Aspect
- East-facing, North-facing, South-facing, West-facing
- Exposure
- Exposed, Sheltered
- UK hardiness
- H7
Plant details
- Plant type
- Trees
- Habit
- Spreading branched
- Foliage
- Deciduous
- Height
- Higher than 12 metres
- Spread
- wider than 8 metres
- Time to full height
- 20-50 years
- Suggested uses
- Architectural
Care notes
- Cultivation
- It is a nitrogen-fixer so can grow on poor soil. Suited to river banks on permanently damp soil in good light. For more information see tree cultivation.
- Pruning
- Pruning group 1
- Propagation
- Propagate by hardwood cuttings or seed. For more advice see our information on how to propagate from seed (tree/shrub
- Pest resistance
- May be susceptible to alder leaf beetle, alder sucker and leaf-mining sawflies
- Disease resistance
- May be susceptible to phytophthora root rot and honey fungus