UK nativeDeciduousTypical height 20–40 m

Sessile oak

Quercus petraea

A native oak often associated with upland woods, with a straighter trunk and acorns attached directly to twigs.

Sessile oak: summer form

THROUGH THE YEAR

Sessile oak through the seasons

Sessile oak: summer form
Summer

An elevated, rounded crown above a comparatively straight trunk.

Sessile oak: autumn form
Autumn

A gold-to-brown canopy with acorns attached without long stalks.

Sessile oak: winter form
Winter

Upright main limbs spread into a rounded, branching crown.

Typical open-grown form. Leaf fall varies with weather and location; young or clipped trees may retain dead leaves. Pruned, sheltered and young trees can look different.

LOOK A LITTLE CLOSER

How to identify sessile oak

Leaves & needles

Rounded lobes on a distinct stalk; leaf base tapers rather than forming prominent ears.

Bark

Grey-brown, becoming deeply ridged and fissured with age.

Twigs

Slender brown shoots carry alternate buds and terminal clusters.

Buds

Pointed, brown, scaly buds gather at the ends of shoots.

Flowers & pollen

Yellow-green male catkins hang from shoots; tiny female flowers are close to the twig.

Fruit, seeds & cones

Acorns sit directly on the shoot or on very short stalks.

Typical flowering: Apr, May. Weather and location change timing.

Images show typical features and are not to scale. Confirm several features using the reference sources below.

CARE WITH PURPOSE

Caring for sessile oak

Help it thrive

Suited to space and well-drained ground, including acidic soils. Protect its root area from compaction and abrupt changes to drainage.

Pruning advice

Maintain the natural crown and avoid large wounds. Ask an arborist to plan any clearance work around established limbs.

When can it be pruned?

June–August, after leaves harden

JanFebMarAprMayJunJulAugSepOctNovDec

Highlighted months are an indicative window for the work described, not a reason to prune every year. An unshaded month is not an absolute ban.

Timing must suit the tree's health, weather, wildlife and legal protection. Avoid severe frost, drought and vulnerable new leaf growth. Mature trees, major branches and suspected defects need professional assessment.

Explore our professional tree pruning service →

Tree health: what to watch for

Compare common tree pests, diseases and warning signs →

Identification & care references

Guide researched November 2026. Identification remains provisional until several features agree. UK native means native in some part of the UK, not necessarily your area.

Before work in England, check tree preservation orders, conservation-area restrictions and wildlife protection. Official tree protection guidance ↗

Sessile oak: Leaves & needles

Sessile oak: Leaves & needles

Rounded lobes on a distinct stalk; leaf base tapers rather than forming prominent ears.

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