Hawthorn

Crataegus monogynaRosaceaeTree

The backbone of the temperate hedgerow and one of the great mass-flowering events of the European year. A hawthorn hedge in full bloom in May carries an extraordinary density of insects — bees, hoverflies, beetles and flies together — and the plant supports several hundred invertebrate species beyond the ones visiting the flowers. Its nectar flow is heavy, brief and famously unreliable from year to year.

Caution

Thorny. Wear gloves when handling or pruning.

Value to bees

Nectar
High
Pollen
High
As a honey crop
Minor honey crop — a surplus only locally or occasionally
Which bees, and why
Open shallow flowers in dense flat clusters — accessible to everything, and efficient to work because a bee can move across dozens without flying.

Flowering

In flower
May to June (northern hemisphere)

The old name 'may' refers to the flowering month, and blossom timing has shifted noticeably earlier in recent decades.

When nectar flows
A heavy but capricious flow. Hawthorn yields a real surplus only in some years and some places, and beekeepers regard a genuine hawthorn honey crop as a piece of luck.
Year-to-year variation
One of the most variable nectar sources in the temperate flora. Warm humid weather during the short bloom is required, and most years do not provide it.

What it does to the honey

In the rare years it yields a surplus, hawthorn honey is amber, strong and distinctly nutty with an almond note. More usually it contributes weight and depth to a May wildflower honey.

Growing it

Conditions
Full sun to partial shade, almost any soil, extremely tough and wind-tolerant.
Size
5-12 m as a tree; kept at 1-3 m as a managed hedge.
Native range
Europe, north-west Africa and western Asia.
Suits
Hedgerow, Large gardens, Small gardens
Maintenance, and the bit that matters
This is the single most consequential maintenance decision in the whole plant catalogue. Annual mechanical flailing of hedgerows — the normal agricultural practice — removes the flowers and the haws entirely across enormous areas of countryside. Cutting a third of the hedge each year restores both.
  • The standard hedging plant of temperate Europe — cheap as bare-root whips and quick to establish.
  • Cut hedges on a two or three-year rotation rather than annually. Hawthorn flowers on second-year wood, so an annually flailed hedge never flowers and never fruits.
  • Tolerates hard cutting and exposure, including coastal wind and pollution.

What it looks like

A thorny deciduous shrub or small tree with deeply lobed leaves and dense flat-topped clusters of white five-petalled flowers, followed by red haws. The scent is strong and distinctly unlike other blossom — musty and sweet at once.

Sources

  • Field Guide to the Bees of Great Britain and IrelandBloomsbury (2015) · Field guide
  • HoneyHQ editorial synthesisHEKNO Ltd · HoneyHQ synthesis

How sources are selected and weighted is set out in the sources and evidence policy.

Guides covering this plant

Tools for planning planting

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