Acer davidii 'Rosalie'
A deciduous tree, up to 10m high in 20 years, with young shoots tinted purple in winter, and olive green mature bark strongly streaked with white. Long, tapered leaves emerge glossy dark red and develop to green, before turning rich yellow in autumn. Pendent clusters of small yellow-green flowers are produced in spring, followed by winged seeds
Size
Ultimate height
8–12 metresTime to ultimate height
10–20 yearsUltimate spread
4–8 metresGrowing conditions
Moisture
Moist but well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Yellow Green | Green Red | ||
|---|---|---|---|---|
| Summer | Green | |||
| Autumn | Green Yellow | |||
| Winter |
Position
- Full sun
- Partial shade
Aspect
East–facing or South–facing or West–facing
Exposure
Sheltered Hardiness
H5Botanical details
- Family
- Sapindaceae
- Native to GB / Ireland
- No
- Foliage
- Deciduous
- Habit
- Columnar upright
- Potentially harmful
- Fruit are ornamental - not to be eaten. Wear gloves and other protective equipment when handling. Pets: Fruit are ornamental - not to be eaten - see the HTA guide to potentially harmful plants for further information and useful contact numbers
- Genus
Acer can be deciduous trees or large shrubs with paired, often palmately-lobed leaves and small flowers followed by characteristic winged fruits. Many have fine autumn colour, and some have ornamental stems
- Name status
Accepted
How to grow
Cultivation
Grow in moisture-retentive, well-drained soil, in a sheltered position with protection from drying winds. Thrives in part shade, but will tolerate full sun if soil is reliably moist. Mulch in spring to improve moisture retention
Propagation
Suggested planting locations and garden types
- Architectural
- Low Maintenance
Pruning
Minimal pruning required; see pruning group 1. Prune from late autumn to mid-winter only
Pests
May be susceptible to aphids, leafhoppers, glasshouse red spider mite, scale insects, caterpillars and rose leaf-rolling sawfly, large rose sawfly. Also rabbits and deer can cause damage
Diseases
May be susceptible to Verticillium wilt, Acer leaf scorch and honey fungus
Get involved
The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.