Turkey Oak - Quercus cerris

Description

A large deciduous tree up to 37m tall with a trunk diameter up to 2 metres. The terminal bud of the twigs is protected by numerous stipules which persist, even on mature leaves. Leaves rather unevenly lobed, dull green and slightly rough above, downy beneath and stalked. The very short stalked acorns ripen in the second year, the acorn cup is surrounded by tassel like scales.

Identification difficulty
Habitat

Roadside verges, parks and woodland.

When to see it

Flowering May to June.

Life History

Deciduous Tree.

UK Status

Not particularly common in Britain but widely spread in most of England and Wales with fewer records from northern England and Scotland.

VC55 Status

Occasional in Leicestershire and Rutland. In the 1979 Flora survey of Leicestershire it was found in 57 of the 617 tetrads.

Leicestershire & Rutland Map

MAP KEY:

Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2025+ | 2020-2024 | pre-2020

UK Map

Species profile

Common names
Turkey Oak
Species group:
flowering plant
Kingdom:
Plantae
Order:
Fagales
Family:
Fagaceae
Records on NatureSpot:
57
First record:
15/07/2010 (Calow, Graham)
Last record:
31/10/2025 (Smith, Peter)

Total records by month

% of records within its species group

10km squares with records

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Latest images

Latest records

Photo of the association

Turkey Oak Aphid

In Britain The Turkey Oak Aphid (Myzocallis boerneri) lives mainly on the undersides of leaves of Turkey Oak. Abroad some additional Oak species are also used. The body length of the alatae is 1.3 to 2.2 mm. For most of the year, immature Myzocallis boerneri are very pale yellow, or whitish with paired dusky spinal and marginal spots and many capitate hairs on the dorsum. Adult viviparous alatae of Myzocallis boerneri are yellowish, with the head and thorax sometimes partly dusky. The dorsal abdomen has a paired row of dark flat-elliptical spinal spots and variably developed marginal spots.

Photo of the association

Andricus grossulariae f. sexual

The sexual generation of the gall wasp Andricus grossulariae causes galls on the catkins of Turkey Oak in Spring. These galls grow to about 6mm and shaped like pointed peas; green at first, then becoming bright red.  The vacated brown galls often persist into autumn. 

Photo of the association

Andricus quercuscalicis f. sexual

Inconspicuous sexual generation galls are caused by the gall wasp Andricus quercuscalicis on the catkins of Turkey Oak. They are small (1.5mm - 2mm) and rounded/cone-shaped; green at first and then brown.  

Photo of the association

Pseudoneuroterus saliens f. agamic

The larva of the Cynipid gall wasp produces galls on Turkey Oak or Lucombe Oak (a hybrid between Turkey Oak and Cork Oak). The spindle-shaped agamic gall (like a slender cowrie shell or Cornish pasty) is attached to a twig, petiole or midrib, often several in a row. The gall is up to 3 mm long, hard, shiny, sometimes with a few length ridges, green at first becoming reddish brown and spotted, or brown later.

Photo of the association

Pseudoneuroterus saliens f. sexual

The larva of the Cynipid gall wasp produces galls on Turkey Oak or Lucombe Oak (a hybrid between Turkey Oak and Cork Oak). The sexual gall is on Turkey Oak acorns; the acorn is slightly swollen and may be flushed red or with red 'tentacles'. 

Photo of the association

Aceria cerrea

Aceria cerrea mites cause galls on the leaves of Turkey Oak. These take the form of blister like bulges with a corresponding depression below which is felted with erineum hairs, some long.