Leaves & needles
Usually 7–13 toothed leaflets on one stalk; complete leaves grow in opposite pairs.
UK nativeDeciduousTypical height 20–35 m
Ash
Fraxinus excelsior
A tall, open-crowned native tree whose opposite black buds make winter identification unusually straightforward.
THROUGH THE YEAR
Ash through the seasons
A light, open canopy with upward-sweeping branches.
Leaves often yellow or fall while still green; winged keys may remain.
Opposite branches, black buds and sometimes hanging bunches of keys.
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 ash
Bark
Smooth grey when young; older trunks develop interlacing ridges and fissures.
Twigs
Stout, grey shoots with opposite branches and conspicuous black buds.
Buds
Velvety black buds, with a larger terminal bud and paired side buds.
Flowers & pollen
Small purple flower clusters appear before leaves and have no showy petals.
Fruit, seeds & cones
Long single-winged keys hang in bunches, often persisting into winter.
Typical flowering: Mar, Apr, May. Weather and location change timing.
A UK photographic reference
Bourne, South Kesteven, Lincolnshire, England, United Kingdom
A young common ash above a hedgerow near Bourne in spring.
Fraxinus excelsior — Bob Harvey / Geograph, via Wikimedia Commons · CC BY-SA 2.0 · Original photograph ↗Resized to fit within 1,200 pixels; no cropping or retouching.
Images show typical features and are not to scale. Confirm several features using the reference sources below.
CARE WITH PURPOSE
Caring for ash
Help it thrive
Retain healthy ash where practical and monitor canopy condition. Protect roots and avoid drought stress in young trees.
Pruning advice
Have declining ash assessed before work. Brittle branches and ash dieback change the work method; pruning cannot cure the disease.
When can it be pruned?
June–August for assessed routine work
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.
Tree health: what to watch for
Ash dieback can make branches dangerously brittle; leave climbing and cutting to trained professionals.
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 ↗