The thorny tree that built British landscapes and haunted the folklore of Europe

Nature · Published 30 September 2026 Swipe more like this →

In short: Known as the May-tree or whitethorn, Crataegus is a genus of resilient, thorny shrubs that shaped the physical boundaries of the British countryside. Beyond its utility as a hedge, this plant is deeply woven into global culinary traditions, medicinal history, and persistent superstitions regarding the supernatural and the afterlife.

The genus Crataegus, commonly called hawthorn, comprises an estimated 200 species of shrubs and small trees native to the Northern Hemisphere. Their name derives from the Greek words for strength and sharpness, a nod to their rot-resistant wood and formidable thorns. These thorns, which can reach up to 11.5 cm in length, have historically served practical purposes, from creating durable fish hooks to acting as surgical tools for First Nations people in western Canada.

In Britain, the hawthorn became a defining feature of the landscape during the eighteenth and nineteenth-century Agricultural Revolution. As the Inclosure Acts mandated new field boundaries, hawthorn saplings were mass-produced in nurseries to create living fences. This utility is mirrored in the plant's global culinary footprint: from the tejocotes stuffed into Mexican piñatas to the shān zhā used in Chinese snacks like tanghulu, the fruit—or 'haw'—is a versatile ingredient in jams, wines, and candies.

The plant's cultural significance is equally vast. In Gaelic folklore, the hawthorn is said to mark the entrance to the otherworld, and it is considered deeply unlucky to cut a 'lone thorn' outside of its blooming season. This dread persists in modern times, with some folklore experts speculating that the failure of the DeLorean Motor Company was linked to the destruction of a fairy thorn. Meanwhile, in the Balkans, hawthorn wood is traditionally considered the only material suitable for crafting stakes to slay vampires.

Medicinally, hawthorn has been a subject of scientific scrutiny, particularly regarding cardiovascular health. A 2008 Cochrane Collaboration meta-analysis found evidence of significant benefits for symptom control in chronic heart failure patients using hawthorn extracts. However, researchers emphasize the need for further study on optimal dosages and potential interactions with orthodox medications, such as digoxin, which patients are advised to avoid when taking hawthorn.

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