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Acer platanoides 'Royal Red'

Acer platanoides 'Royal Red'

Royal Red Norway Maple

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Description

Acer platanoides ‘Royal Red’ (Royal Red Norway Maple) was brought onto the market in 1963 by the Pacific Coast Nursery of Oregon, USA. In its juvenile state this tree displays the best and most upright habit of all Norway Maple cultivars. Acer platanoides ‘Royal Red’ reaches a height of fifteen metres and develops a densely branched, broadly egg-shaped crown between eight and twelve metres wide.

The glossy, 5-lobed and palmate leaf of cultivar ‘Royal Red’ is the brightest red-violet of all red-leaved cultivars of Acer platanoides. The leaf colour is slightly more pronounced in spring and autumn but the foliage remains a consistent bright red-violet before dropping in winter. In the USA, the colour is even brighter because of the different climatic conditions. Cultivar ‘Royal Red’ - in addition to its splendid leaf colour - is even more precious because of its terrific blossom with striking red-yellow flowers. They appear in April before the leaf emerges in upright corymbs and are easily found by bees, butterflies and other insects owing to the highest nectar and pollen value. The blossom is followed by the familiar helicopters: seeds in samaras in a straight line. The bark of Acer platanoides ‘Royal Red’ is smooth and grey and only starts to develop fine grooves as it matures.

Acer platanoides ‘Royal Red’ is not very demanding when it comes to planting site and thrives on most types of soil apart from peat soils. This woodland tree tolerates wind, shade, sun and paved areas but does not like stagnant water or extreme dry conditions. As it matures Norway Maple ‘Royal Red’ casts a deep shadow in which only true woodland plants can thrive as underplanting. For parks and large gardens cultivar ‘Royal Red’ can be of high decorative value with its dark foliage and early flowering. But also in avenues, green verges or in open paved areas in broad streets the tree makes a beautiful addition. Acer platanoides ‘Royal Red’ is less prone to mildew than Acer platanoides ‘Crimson King’.

Types of planting

Tree types

standard trees multi-stemmed trees climate trees shade trees

Topiary on stem

fval block

Use

Location

avenue park central reservation in containers roof garden large garden cemetery traffic areas, industrial zones

Pavement

none none open open

Planting concepts

climate planting eco planting shade-tolerant prairie planting

Characteristics

Crown shape

wide egg-shaped wide egg-shaped

Crown structure

dense dense

Height

12 - 15 m

Width

8 - 12 m

Winter hardiness zone

4A - 8B

Aspects

Wind

tolerant to wind

Soil

loess sabulous clay heavy clay light clay sand loamy soil

Nutrient level

moderately rich in nutrients rich in nutrients

Soil moisture level

dry moist

Light requirements

sun partial shade shade

pH range

acidic neutral alkaline

Host plant/forage plant

bees butterflies nectar value 5 pollen value 5

Extreme environments

tolerant to dryness tolerates air pollution tolerates heat

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Photos

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high-stem standard tree
Acer platanoides 'Royal Red' standard tree
high-stem standard tree
Acer platanoides 'Royal Red' standard tree
high-stem standard tree
Acer platanoides 'Royal Red' standard tree
high-stem standard tree
Acer platanoides 'Royal Red' standard tree
high-stem standard tree
Acer platanoides 'Royal Red' standard tree
multi-stem multi-stem
Acer platanoides 'Royal Red' multi-stem
multi-stem multi-stem
Acer platanoides 'Royal Red' multi-stem
block-stem block
Acer platanoides 'Royal Red' block
block-stem block
Acer platanoides 'Royal Red' block
flowers flowers
Acer platanoides 'Royal Red' flowers
leaves leaves
Acer platanoides 'Royal Red' leaves
leaves leaves
Acer platanoides 'Royal Red' leaves
leaves leaves
Acer platanoides 'Royal Red' leaves
fruits fruits
Acer platanoides 'Royal Red' fruits
bark bark
Acer platanoides 'Royal Red' bark
twigs twigs
Acer platanoides 'Royal Red' twigs
twigs twigs
Acer platanoides 'Royal Red' twigs

Seasonal colours

Acer platanoides 'Royal Red' seizoenskleur
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Flowers

Flowers

raceme corymbose striking standing

Flower colour

yellow

Flowering period

April

Leaves

Leaf colour

dark red buds red-violet

Leaves

deciduous palmate opposite polished dentate lobate

Autumn colour

red-brown

Fruits

Fruit colour

yellow-brown

Fruits

winged capsules

Bark

Bark colour

grey-brown

Bark

slightly furrowed

Twigs

Twig colour

red-brown

Twigs

bare

Root system

Root system

deep shallow fine roots central root

For and by green professionals

The TreeEbb is a platform for and by green professionals, in which we collect knowledge and experience from the sector and make this available for users. All the details and photos are free to use for non-commercial purposes. Want to share your tree knowledge? Send photographs and additional information to treeebb@ebben.nl

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Use
Location
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Pavement
OK
Host plant/forage plant
OK
Planting concepts
OK
Types of planting
Tree types
OK
Multi-stemmed trees
OK
Crown structure
OK
Crown shape
OK
Topiary on stem
OK
Topiary
OK
Height
m
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m
OK
Width
m
-
m
OK
Aspects
Wind
OK
Soil
OK
Nutrient level
OK
Soil moisture level
OK
Light requirements
OK
PH range
OK
Extreme environments
OK
Stage of succession
OK
Plant characteristics
Flowering period
January
-
December
OK
Flower colour
OK
Leaf colour
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Autumn colour
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Fruit colour
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Bark colour
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Winter hardiness

A plant's winter hardiness is the coldest area in which it is frost-resistant. This is based on the average annual minimum temperature. Winter hardiness zones are thirteen different frost zones in steps of 5.5 degrees Celsius. This format is an international standard for the hardiness of plants. The zones in which the plant is frost-resistant are always included in the description of trees and other vegetation.

Winter hardiness is a genetic characteristic and is not influenced by the location in which the plant is cultivated. This means that a plant that has been cultivated for many years in winter-hardiness zone 6 but has a winter hardiness of 3 is perfectly suited for replanting in a colder zone. It will thrive there thanks to its genetic characteristics.

When choosing planting for a project, the winter hardiness of the plants is extremely important. By choosing species that match the zone in which the project is being created, it is possible to ensure that plants can withstand the minimum temperature in that area.

Winter hardiness map
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British Asssociation of Landscape Industries

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