Whitebeam (Sorbus aria)

Photo: Kurt Stüber [1], CC BY-SA 3.0 · source

Broadleaf tree · Rose family (Rosaceae)

Whitebeam

Sorbus aria · also: Common whitebeam

Whitebeam is a native tree of 8–15 m, recognisable by its oval, double-toothed leaves with a brilliant white, felted underside: when the wind blows through it, the whole tree looks silvery. In May it bears white flower heads for bees and hoverflies, and in autumn orange-red berries for thrushes and starlings. In the wild it is rare, on dry, chalky soils. It tolerates wind, chalk and drought and stays fairly compact: a tough street tree and an excellent tree for an ordinary garden.

Caution: Whitebeam can pass fireblight to apple, pear and quince: don’t plant it right next to fruit trees.

  • Light

    Full sun

    warm and bright

  • Moisture

    Dry

    tolerates drought

  • Legal basis

    Any garden soil

    neutral to chalky

  • Hardiness

    Throughout Belgium

    no protection needed

  • Size

    8–15 m

    tall

  • Flowering

    May

Key facts
Pruning monthsJuly–August and December–February
Height8–15 m
Native to BelgiumYes
Good for bees, butterflies and birdsYes, for bees and birds
Poisonous to people and petsNot known to be poisonous
FloweringMay

Identify

Whitebeam: how do you recognise it?

Habit
Tree of 8–15 m with an egg-shaped to rounded, fairly compact crown; often narrow and upright when young.
Leaf
Alternate, 6–12 cm, oval, irregularly double-toothed, with 10–14 pairs of parallel veins. Dark green above, white-felted below: in the wind the tree looks silvery.
Bark
Smooth and grey, later finely cracked.
Flower
White flower heads in May.
Fruit
Orange-red to scarlet berries (1–1.5 cm) with small pale speckles, in autumn.
Difference from Swedish whitebeam
Swedish whitebeam has leaves that are lobed towards the base and grey-felted, not brilliant white.

Flowering: May · Harvest and fruit: September–October · Pruning: July–August and December–February

Identify by feature: White or silver underside · White blossom · Orange berries

Looks like it, but isn’t

In your garden

Why grow it?

  • A native tree that fits an ordinary garden: 8–15 m tall and about 6 m across.
  • Silvery foliage, white flowers in May and orange-red berries in autumn.
  • Tolerates wind, chalk, drought and urban soil: also for an exposed or dry spot.
  • Flowers for bees and hoverflies, berries for thrushes and starlings.

Whitebeam: where does it grow best?

  • Full sun; in shade it flowers less and the crown stays thin.
  • Dry to normal, well-drained soil. It loves chalk, but also grows on other soils, as long as they are not wet.
  • Tolerates wind, even on the coast, and urban soil: a good street tree.
  • Allow for a crown about 6 m across: it fits an average garden.
Light
Full sun
Legal basis
Any garden soil
Moisture
Dry
Size
12 m tall, 6 m wide
Hardiness
Throughout Belgium, no protection needed

Goes well with

  • Field maple: A native tree that, like whitebeam, tolerates chalk, drought and wind; together a sturdy woodland edge or hedgerow.
  • Wayfaring-tree: A native shrub of dry, chalky soils, with white flower heads in May and berries that turn from red to black.
  • Wild privet: A native, semi-evergreen shrub for chalky soil; flowers in June for butterflies and bees.

Good and bad companions

Goes well with

Best kept away from

Maintenance

Whitebeam: when and how to plant it?

  1. Plant from November to March, in frost-free weather, bare-root or root-balled.
  2. Dig a generous planting hole, loosen the bottom and set the tree at the same depth as before.
  3. Put in a stake on the windward side and tie the tree loosely.
  4. Don’t plant it right next to apple, pear or quince trees: they can pass fireblight to each other.
  5. Water during dry spells in the first year.

Care

Watering
During dry spells in the first year; after that it copes well with drought.
Feeding
Not needed; on poor soil, a little compost in spring.
Water shoots
Remove water shoots on the trunk as soon as you see them.
Fireblight
In summer, check for twigs that suddenly blacken and wilt, as if scorched. Cut them out generously and disinfect your secateurs.

Tip: Got a small garden? Choose the variety ‘Lutescens’: it stays more compact, and in spring its young leaves are covered in creamy-white down on both sides.

Whitebeam: when to prune it?

Pruning months: July–August and December–February.

When: Dead, diseased and broken branches can be removed at any time of year. Formative pruning in winter or after flowering.

How:

  • Little needed: remove crossing branches and water shoots.
  • Train a young tree with a single leader and a clear stem tall enough for the spot, e.g. 2 m above a path.
  • Cut out branches with fireblight at least 30 cm below the visibly affected part, in dry weather.

Caution: Can carry fireblight.

Pruning: when and how · Pruning calendar and basic rules

Propagation

Sowing
In autumn, take the seeds from ripe berries and sow them straight away outdoors in a pot or seedbed. They need a winter’s cold and germinate in spring, sometimes only a year later.
Grafting
Varieties such as ‘Lutescens’ are grafted onto a rootstock; best left to a nursery.

Whitebeam: how does it get through the winter?

Hardy throughout Belgium: no protection needed.

  • Fully hardy.
  • The berries sometimes hang on into winter, until thrushes, fieldfares and starlings eat them.
  • In the bare crown you can easily see which branches cross: a good time for formative pruning.

Diseases and pests

  • Fireblight: Flowers, twigs and leaves suddenly wilt and turn brown to black, as if scorched; young shoot tips bend over like a shepherd’s crook. Cut out diseased branches generously in dry weather and disinfect your tools.
  • Aphids: Curled leaves in spring, with sticky honeydew. Ladybirds and birds usually deal with them; don’t spray.
  • Wet soil: On wet, poorly drained soil it declines and branches die back. Choose a dry to normal spot.

Through the year

  • January: Formative pruning in frost-free weather; plant bare-root trees.
  • February: Finish formative pruning; plant.
  • May: Flowering: white flower heads for bees and hoverflies; the young leaves are silvery white.
  • June: Check for aphids and fireblight.
  • July: Summer pruning after flowering; cut out diseased twigs.
  • August: Finish summer pruning.
  • September: The berries turn orange-red: food for thrushes.
  • October: Take the seeds from ripe berries and sow them outdoors.
  • December: Formative pruning can start again; plant bare-root trees.

Use

What can you use it for?

Garden and landscape
Tough street and garden tree that copes well with wind, chalk and drought.
For wildlife
Flowers for bees and hoverflies; the berries for thrushes and starlings.
Food and drink
The berries are ripe and edible after frost, in jelly, but rather mealy.

Edible and useful

Berries (September–October)
The orange-red berries in September and October. They are only good after the first frost, or once they have become slightly overripe and soft (bletted); they then taste sweet and mealy. Use them cooked, for jelly or purée, preferably with apple.
Storing
The berries can be frozen on their clusters. Jelly keeps for a year in sterilised jars.

Caution: As with all rowans: do not eat them raw in large amounts, and sieve out the seeds. Do not confuse whitebeam with poisonous red berries such as those of yew, holly or honeysuckle; whitebeam is easy to recognise by its leaves with brilliant white, felty undersides. Whitebeam is often planted along busy roads: pick away from traffic instead, and never eat anything you have not identified with certainty.

Eating and using is at your own risk: see the terms of use.

Recipes

Good for wildlife

Birds
Berries, seeds or insects as food, or a place to nest.
Bees
Nectar and pollen for honeybees and wild bees.
Hoverflies
Open flowers for hoverflies; many of their larvae eat aphids.

You and this species

Did you know?

  • Its Dutch name, meelbes (‘mealy berry’), refers to the mealy flesh of the fruit. Whitebeam tolerates wind, chalk and drought, which makes it a good street tree.
  • In spring the buds open like little white candles: the young leaves are white-hairy on both sides and only turn green on top later on.
  • The berries are ripe and edible after frost, in jelly, but rather mealy.
  • Whitebeam hybridises with rowan and wild service tree. Such crosses gave rise to species like the Swedish whitebeam, which set seed without fertilisation and so became stable species.
  • In Belgium, whitebeam grows wild mainly on limestone rocks and slopes in Wallonia, for example in the Meuse valley.

All species · Identification key · Pruning calendar

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