Acer rubrum 'Joseph'
red maple 'Joseph'
A slow-growing, upright, deciduous tree about 15m tall, the 3-5 lobed palmate, dark green leaves to 10cm long, greyish-white beneath, turning yellow to deep red in autumn. Upright clusters of tiny red flowers are borne in spring followed by dark red winged fruits in autumn.
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Size
Ultimate height
Higher than 12 metresTime to ultimate height
10–20 yearsUltimate spread
Wider than 8 metresGrowing conditions
Moisture
Moist but well–drainedpH
Acid, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Red | Green Grey Silver | ||
|---|---|---|---|---|
| Summer | Green Grey Silver | Red | ||
| Autumn | Yellow Red | |||
| Winter |
Position
- Full sun
- Partial shade
Aspect
East–facing or South–facing or West–facing
Exposure
Exposed or Sheltered Hardiness
H6Botanical details
- Family
- Sapindaceae
- Native to GB / Ireland
- No
- Foliage
- Deciduous
- Habit
- Bushy, Columnar upright
- 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
Unresolved
How to grow
Cultivation
Grow in fertile, moist but well-drained neutral to acid soil in sun or partial shade. See tree cultivation for further advice
Propagation
Propagate by grafting in late winter or softwood cuttings in early summer
Suggested planting locations and garden types
- Architectural
- Cottage and informal garden
- Wildlife gardens
Pruning
Pruning group 1, if necessary, from late autumn to midwinter only
Pests
May be susceptible to Acer gall mite, aphids, caterpillars and horse chestnut scale
Diseases
May be susceptible to Verticillium wilt, Acer leaf scorch and honey fungus
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