Thomas the Rhymer, the famous thirteenth century Scottish mystic and poet, once met the Faery Queen by a hawthorn bush from which a cuckoo was calling. She led him into the Faery Underworld for a brief sojourn, but upon reemerging into the world of mortals he found he had been absent for seven years. Themes of people being waylaid by the faery folk to places where time passes differently are common in Celtic mythology, and the hawthorn was one of, if not the, most likely tree to be inhabited or protected by the Wee Folk. In Ireland most of the isolated trees, or so-called 'lone bushes', found in the landscape and said to be inhabited by faeries, were hawthorn trees. Such trees could not be cut down or damaged in any way without incurring the often fatal wrath of their supernatural guardians. The Faery Queen by her hawthorn can also be seen as a representation of an earlier pre-Christian archetype, reminding us of a Goddess-centred worship, practised by priestesses in sacred groves of hawthorn, planted in the round. The site of Westminster Abbey was once called Thorney Island after the sacred stand of thorn trees there.
Hawthorn is at its most prominent in the landscape when it blossoms during the month of May, and probably the most popular of its many vernacular names is the May-tree. As such, it is the only British plant which is named after the month in which it blooms. As 'Thorn' it is also the most common tree found in English place names, and the tree most frequently mentioned in Anglo-Saxon boundary charters. It has many associations with May Day festivities. Though the tree now flowers around the middle of the month, it flowered much nearer the beginning of the month, before the introduction of the Gregorian calendar in 1752.
The blossoms were used for garlands, and large leafy branches were cut, set in the ground outside houses as so-called May bushes and decorated with local wildflowers. Using the blossoms for decorations outside was allowed, but there was a very strong taboo against bringing hawthorn into the house. In the early 1980s the Folklore Society's survey of 'unlucky' plants revealed that 23% of the items referred to hawthorn, more than twice as many instances as the second most unlucky plant. Across Britain there was the belief that bringing hawthorn blossom into the house would be followed by illness and death, and there were many instances of hapless children being scolded by adults for innocently decorating the home. Mediaeval country folk also asserted that the smell of hawthorn blossom was just like the smell of the Great Plague in London. Botanists later discovered that the chemical trimethylamine present in hawthorn blossom is also one of the first chemicals formed in decaying animal tissue. In the past, when corpses would have been kept in the house for several days prior to burial, people would have been very familiar with the smell of death, so it is hardly surprising that hawthorn blossom was so unwelcome in the house.
It has also been suggested that some of the hawthorn (Crataegus monogyna) folklore may have originated for the related woodland hawthorn (Crataegus laevigata) which may well have been commoner during the early Middle Ages, when a lot of plant folklore was evolving. Woodland hawthorn blossom gives off much more of an unpleasant scent of death soon after it is cut, and it also blooms slightly earlier than hawthorn, so that its blossoms would have been more reliably available for May Day celebrations.
Notwithstanding the above taboo, the leaves were eaten and were commonly referred to as bread and cheese, the blossom and berries were made into wines and jellies, and decoctions of the flowers and leaves were used to stabilise blood pressure. The strong, close-grained wood was used for carving, and for making tool handles and other small household items. Probably its greatest practical use to people has been as hedging.
Britain's most famous hawthorn is the Holy Thorn of Glastonbury. Legend tells of how Joseph of Arimathea, the uncle of the Virgin Mary, arrived at a hill overlooking Glastonbury Tor with a few disciples and two sacred vessels containing the blood and sweat of Jesus. Where he thrust his staff into the ground it sprouted and grew into a thorn tree. Though the original is obviously not there any more, one of its supposed descendants does still stand on the hill, and other offspring grown from cuttings and perpetuated over the centuries can be found around Glastonbury and indeed further afield in England. This particular hawthorn blooms twice a year, once in May and again around Christmas. A sprig of one of these Glastonbury thorns from outside St Johns Church is traditionally sent to the Queen, who is said to decorate her breakfast table with it on Christmas morning.
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