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Quercus × macdanielii HERITAGE®

Quercus × macdanielii HERITAGE®

HERITAGE® Oak

synonym Quercus × macdanielii 'Clemons'
Quercus robur 'Heritage'

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Description

Quercus × macdanielii HERITAGE is a hybrid between Quercus macrocarpa and Quercus robur. The original tree was found in the garden of Gene Cully in Jacksonville, United States, grown from seed of a hybrid oak in 1974. The name macdanielii refers to Dr. Joseph C. McDaniel, a leading authority on oaks at the University of Illinois at the time, who was the first to correctly identify this hybrid. After twenty one years of testing, Quercus × macdanielii HERITAGE was selected as the best specimen from hundreds of seedlings and was patented in 1998 by nurseryman Earl Cully.

This cultivar shows excellent hybrid vigor and develops relatively quickly into a large tree with a strong central leader and a densely branched, broadly pyramidal crown with a rounded top. At maturity, the tree reaches a height of approximately fifteen to twenty four meters and a width of about fifteen meters.

The inversely ovate, lobed leaves are glossy dark green, leathery and very healthy, with powdery mildew occurring only very rarely. The underside of the leaf is covered with silvery gray hairs. In autumn, the foliage turns beautiful golden yellow. Young leaves emerge with a bronze coloration, creating a striking contrast with the darker mature foliage. The gray bark is furrowed into rectangular plates. The twigs of Quercus × macdanielii HERITAGE are not corky. In May, the tree flowers with hanging yellow green catkins. The acorns are ovate, about three centimeters long, and are enclosed halfway by a silvery cup.

Thanks to the genetic influence of Quercus macrocarpa, this hybrid oak is highly tolerant of extreme cold. Strong winds and even ice pose no problem for its exceptionally strong branches. Deicing salt also has little effect on this excellent street and avenue tree. However, paving is not well tolerated, so the tree should be planted in open green strips or verges. HERITAGE oak prefers calcareous, fertile soils and is also a magnificent addition to parks and large gardens due to its health, strength and ornamental value.

Types of planting

Tree types

standard trees feathered trees

Use

Location

street avenue park central reservation large garden cemetery traffic areas, industrial zones countryside windbreak

Pavement

none none open open sealed sealed

Characteristics

Crown shape

wide pyramidal wide pyramidal

Crown structure

dense dense

Height

15 - 24 m

Width

9 - 15 m

Winter hardiness zone

4A - 9B

Aspects

Wind

tolerant to wind

Soil

loess sabulous clay light clay sand loamy soil

Nutrient level

low in nutrients moderately rich in nutrients rich in nutrients

Soil moisture level

dry moist

Light requirements

sun

pH range

acidic neutral alkaline

Host plant/forage plant

birds small mammals

Extreme environments

tolerant to salt spray tolerates air pollution

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Order this plant? Or would you like further information about Quercus × macdanielii HERITAGE® ? Make an appointment for a detailed planting recommendation.
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Photos

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high-stem standard tree
Quercus × macdanielii HERITAGE® standard tree
high-stem standard tree
Quercus × macdanielii HERITAGE® standard tree
high-stem standard tree
Quercus × macdanielii HERITAGE® standard tree
feathered feathered
Quercus × macdanielii HERITAGE® feathered
feathered feathered
Quercus × macdanielii HERITAGE® feathered
bark bark
Quercus × macdanielii HERITAGE® bark
bark bark
Quercus × macdanielii HERITAGE® bark
bark bark
Quercus × macdanielii HERITAGE® bark
twigs twigs
Quercus × macdanielii HERITAGE® twigs
fruits fruits
Quercus × macdanielii HERITAGE® fruits
leaves leaves
Quercus × macdanielii HERITAGE® leaves
leaves leaves
Quercus × macdanielii HERITAGE® leaves
leaves leaves
Quercus × macdanielii HERITAGE® leaves
leaves leaves
Quercus × macdanielii HERITAGE® leaves
leaves leaves
Quercus × macdanielii HERITAGE® leaves

Flowers

Flowers

catkins discrete pendulous

Flower colour

yellow-green

Flowering period

April - May

Leaves

Leaf colour

buds bronze dark green underside grey

Leaves

deciduous obovate big leathery polished lobate

Autumn colour

yellow yellow-brown

Fruits

Fruit colour

brown

Fruits

striking acorn

Bark

Bark colour

grey

Bark

peeling furrowed

Twigs

Twig colour

olive green

Twigs

bare with lenticels vertical branches long shoots

Root system

Root system

deep extensive highly branched tap 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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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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