Acer pseudoplatanus 'Atropurpureum'

Synonyms

Acer pseudoplatanus 'Spaethii' misapplied
Acer pseudoplatanus 'Purpureum Spaethii'

Trees

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A deciduous tree, to around 20m high, with large, five-lobed leaves held on contrasting red leaf stalks, the leaves mature to dark green, dark red-purple beneath, and turn yellow before falling in autumn. Small yellow-green flowers are produced in spring, followed later by red winged seeds

Position

Full sun, Partial shade

Soil Types

Clay, Loam, Sand

Max Height

Higher than 12 metres

Max Spread

wider than 8 metres

Size

Time to Maturity: 20–50 years
Max Spread: wider than 8 metres
Max Height: Higher than 12 metres

Growing Conditions

Clay Loam Sand

Moisture: Moist but well–drained
pH: Acid or Alkaline or Neutral

Position

Full sun Partial shade

Aspect: East–facing or West–facing or North–facing or South–facing
Exposure: Exposed or Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

H1A: under glass all year (>15C)
H1B: can be grown outside in the summer (10 - 15)
H1C: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20): H7

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Sapindaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Bushy, Spreading branched
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 fertile, moist but well-drained soil in sun or partial shade. See tree cultivation for further advice

Propagation

Propagate by softwood cuttings, or by grafting

Suggested planting locations and garden types

Cottage and informal garden
Wildlife gardens
Architectural
Coastal

Pruning

Pruning group 1, only from late autumn to mid-winter

Pests

May be susceptible to aphids and scale insects, including horse chestnut scale

Diseases

May be susceptible to Verticillium wilt, Acer leaf scorch and honey fungus