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Acer palmatum ‘Red Emperor’

Japanese Maple 'Emperor 1'

Low Maintenance Hardiness H5

Deep red-purple leaves appear later than on many Japanese maples, helping Acer palmatum ‘Red Emperor’ avoid some late spring frost damage. The foliage holds its dark colour through summer before turning crimson in autumn on a bold, upright small tree.

SKU: ACER-467-Y

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Plant Details

Size

Max Height
4.0 m — 8.0 m
Max Spread
4.0 m — 8.0 m
Growth Habit
Tall, narrow growth habit with strongly vertical main stems., Densely branched plant with compact, leafy, rounded overall shape.

Planting Position

Sunlight Indicates how much direct sunlight the plant needs each day. Full sun means 6+ hours, part shade is filtered or morning sun, and full shade is little to no direct sun.
Full Sun Part Shade
Aspect Aspect refers to the direction the planting spot faces (north, south, east or west). It affects light levels, warmth and exposure.
South East West
Exposure Exposure describes how sheltered or exposed a plant’s position is, particularly to wind and weather.
Sheltered
Hardiness Hardiness indicates how well a plant tolerates cold conditions outdoors. Higher ratings generally mean greater frost tolerance.
Hardiness H5 (−15 to −10 °C) Cold-hardy

Ideal Soil Conditions

Soil Type Soil type describes the texture of the soil (clay, sand, loam, chalk). This affects drainage, nutrients and how roots grow.
Chalk Clay Loam Sand
Soil Moisture Soil moisture tells you how wet or dry the soil should be for best growth. Match this to your garden conditions for healthier plants.
Moist but permeable
Soil pH Soil pH measures how acidic or alkaline the soil is. It affects nutrient availability and can impact plant growth.
Acid Neutral

Plant Uses & Merits

Uses
  • Patios / Courtyards
  • Containers
  • Flower Borders
Merits
  • Low Maintenance

Acer palmatum ‘Red Emperor’ Description

Acer palmatum ‘Red Emperor’ forms a bushy, upright Japanese maple with broad, five to seven-lobed leaves in rich red-purple shades. The foliage opens slightly later than that of many cultivars, reducing the risk of damage from late spring frost. Its dark colouring remains effective through summer and develops into vivid crimson during autumn. Growing to around 5 metres high with a broad crown, it makes a strong specimen for a lawn, large border or sheltered courtyard. Plant it in moist but well-drained soil in full sun or partial shade. Some direct light helps maintain the deep leaf colour, but the root area should not be allowed to dry out. Shelter from strong wind will keep the leaf edges in better condition.