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Acer 'NORWEGIAN SUNSET'

Acer 'NORWEGIAN SUNSET'

NORWEGIAN SUNSET Maple

synonym Acer truncatum x platanoides 'Keithsform'

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Description

Acer ‘NORWEGIAN SUNSET’ (NORWEGIAN SUNSET maple, synonym: Acer truncatum x platanoides ‘Keithsform’) was selected by the American tree breeder Keith S. Warren and in marketed by J. Frank Schmidt & Son Nursery in Oregon in 1989. The ‘NORWEGIAN SUNSET’ cultivar is also a cross between Acer truncatum and Acer platanoides. There are many similarities with the ‘PACIFIC SUNSET’ selection, but ‘NORWEGIAN SUNSET’ grows to be larger, with heights up to 10 metres and somewhat wider branches and a narrow, oval crown.  

In April, the NORWEGIAN SUNSET maple blooms striking, yellow-green racemes that many bees and butterflies fly to. After blooming, the tree bears equally striking, winged brown-green fruit. The thick, serrate glossy leaves are deeply lobate and bud dark green, stay that colour in summer, and the ‘NORWEGIAN SUNSET’ selection has an impressive yellow-orange to red gradient in autumn. Acer ‘NORWEGIAN SUNSET’ has smooth, grey-brown bark and bare brown twigs.  

The ‘NORWEGIAN SUNSET’ selection gets its name from its parent Acer platanoides: the Norway maple. They both grow at the same speed, with the same crown density and leaf shape, but thanks to its other parent the Acer truncatum, the ‘NORWEGIAN SUNSET’ can better withstand heat and drought. It can also handle wind, pavement and air pollution. The ‘NORWEGIAN SUNSET’ maple is absolutely perfect for use in streets, avenues or parks. But the selection is also great for use on squares, along roads and in roof gardens. Acer ‘NORWEGIAN SUNSET’ thrives in all types of soil, but does not like wet feet and for the best growth and blooms, it prefers a sunny to slightly shaded environment in permeable soil.

Types of planting

Tree types

standard trees shade trees

Use

Location

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

Pavement

none none open open sealed sealed

Planting concepts

prairie planting

Characteristics

Crown shape

ovoid ovoid

Crown structure

semi-open semi-open

Height

5 - 10 m

Width

5 - 8 m

Winter hardiness zone

6A - 8B

Aspects

Wind

tolerant to wind

Soil

loess sabulous clay peaty heavy clay light clay sand loamy soil all soils

Nutrient level

low in nutrients moderately rich in nutrients rich in nutrients

Soil moisture level

dry moist

Light requirements

sun partial shade

pH range

acidic neutral alkaline

Host plant/forage plant

bees butterflies

Extreme environments

tolerant to dryness tolerates air pollution tolerates heat

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Photos

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high-stem standard tree
Acer 'NORWEGIAN SUNSET' standard tree
high-stem standard tree
Acer 'NORWEGIAN SUNSET' standard tree
high-stem standard tree
Acer 'NORWEGIAN SUNSET' standard tree
high-stem standard tree
Acer 'NORWEGIAN SUNSET' standard tree
high-stem standard tree
Acer 'NORWEGIAN SUNSET' standard tree
high-stem standard tree
Acer 'NORWEGIAN SUNSET' standard tree
flowers flowers
Acer 'NORWEGIAN SUNSET' flowers
leaves leaves
Acer 'NORWEGIAN SUNSET' leaves
leaves leaves
Acer 'NORWEGIAN SUNSET' leaves
leaves leaves
Acer 'NORWEGIAN SUNSET' leaves
leaves leaves
Acer 'NORWEGIAN SUNSET' leaves
fruits fruits
Acer 'NORWEGIAN SUNSET' fruits
autumn-leaves autumn leaves
Acer 'NORWEGIAN SUNSET' autumn leaves
autumn-leaves autumn leaves
Acer 'NORWEGIAN SUNSET' autumn leaves
autumn-leaves autumn leaves
Acer 'NORWEGIAN SUNSET' autumn leaves
autumn-leaves autumn leaves
Acer 'NORWEGIAN SUNSET' autumn leaves
twigs twigs
Acer 'NORWEGIAN SUNSET' twigs
twigs twigs
Acer 'NORWEGIAN SUNSET' twigs
twigs twigs
Acer 'NORWEGIAN SUNSET' twigs

Seasonal colours

Acer 'NORWEGIAN SUNSET' seizoenskleur
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Flowers

Flowers

raceme striking

Flower colour

yellow-green

Flowering period

April

Leaves

Leaf colour

dark green

Leaves

deciduous ovoid palmate thick opposite polished laciniate serrate lobate

Autumn colour

yellow-orange red

Fruits

Fruit colour

brown-green

Fruits

striking winged

Bark

Bark colour

grey-brown

Bark

smooth

Twigs

Twig colour

brown

Twigs

bare

Root system

Root system

deep highly branched

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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Host plant/forage plant
OK
Planting concepts
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Types of planting
Tree types
OK
Multi-stemmed trees
OK
Crown structure
OK
Crown shape
OK
Topiary on stem
OK
Topiary
OK
Height
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m
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Width
m
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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
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Leaf colour
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Autumn colour
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Fruit colour
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Bark colour
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Special features
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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.

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