Quercus × ​​turneri

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Evergreen oak (tree 252) in Bergpark Wilhelmshöhe (November 2019)

The evergreen oak ( Quercus × turneri , Quercus hispanica , Pseudoturneri), also called Turner's oak , is a cross between the holm oak ( Quercus ilex ) and English oak ( Quercus robur ), which is native to the Mediterranean region, in an English nursery around 1780 . It belongs to the genus oak ( Quercus ) within the beech family (Fagaceae). The epithet turneri is used by the nursery “S. Turner Nursery ”from Essex , England, where the species was first documented and bred.

description

Appearance

The crown of the small tree is rounded, conical to ovoid. It can reach a height of up to 15 m. Its branches are slightly arched upwards. Young twigs are hairy, but later glabrous.

Bark and bark

The bark on young twigs is smooth and grayish. The bark is dark brown and cracked.

Foliage leaf

Top of sheet
Foliage leaves

The evergreen oak stays green all year round, depending on its location. On the other hand, some leaves are shed or remain withered on the tree for the winter. The leaf blade is elliptical with a length of 6 to 12 centimeters with five to six times lobed edges. The upper side of the leaf is dark green and smooth, while the underside is matt and lighter to grayish.

blossom

Buds

The flowering time is in April. In May, the tree forms felty, green catkins , these are mostly sterile, only a few fruits are formed.

fruit

The fruit ripening begins in September. The nut fruits are so-called acorns, these are in 3 to 7 clusters. They are 2-2.5 cm long, their shape is oblong oval with a hemispherical, felt cup.

use

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Turner's oak is mainly used as a park tree. Turner's oak is of no importance to the timber industry.

To cultivate Turner's oak successfully, a protected location in a region with mild winter is recommended. The location should be sunny, warm and ideally in partial shade. In the Central European climate the tree grows more slowly. The tree has no special demands on the soil. In cold winters, the tree can lose all of its foliage, this does not harm the tree.

Individual evidence

  1. ↑ [1]
  2. ↑ Profile at tropengarten.de .
  3. ^ F. Meyer: Gehölzflora , Fitschen, 2007, ISBN 978-3-494-01422-7

Web links

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