The most ordinary of flowers, the thistle is widely considered a weed. Maude Grieve indicates in the book noted below, "It has always been a plant of ill repute among us." I took a photo yesterday while wandering in the woods near Point Reyes.
What a delight, also, to discover Mrs. Grieve's book, A Modern Herbal, published in 1931, still available in book form, as well as online: a marvelous compendium of information on the medicinal, culinary, cultivation and folklore of herbs.
Mrs. Grieve's brief introductory discussion of thistles is delightful:
Thistle is the old English name - essentially the same in all kindred languages - for a large family of plants occurring chiefly in Europe and Asia.
In agriculture the Thistle is the recognized sign of untidiness and neglect, being found not so much in barren ground, as in good ground not properly cared for. It has always been a plant of ill repute among us; Shakespeare classes 'rough Thistles' with 'hateful Docks,' and further back in the history of our race we read of the Thistle representing part of the primeval curse on the earth in general, and on man in particular, for - 'Thorns also and Thistles shall it bring forth to thee.'
Thistles will soon monopolize a large extent of country to the extinction of other plants, as they have done in parts of the American prairies, in Canada and British Columbia, and as they did in Australia, till a stringent Act of Parliament was passed, about twenty years ago, imposing heavy penalties upon all who neglected to destroy Thistles on their land, every man being now compelled to root out, within fourteen days, any Thistle that may lift up its head, Government inspectors being specially appointed to carry out the enforcement of the law.
The growth of weeds in Great Britain, having, in the opinion of many, also reached disturbing proportions, it is now proposed to enact a similar law in this country, and the Smallholders' Union is bringing forward a 'Bill to prevent the spread of noxious weeds in England and Wales,' the provisions being similar to the Australian law - weed-infested roadsides, as well as badly-cleared cultivated land, to come within the scope of the enactment.
Among the thirteen noxious weeds enumerated in the proposed Bill, the name of Thistle is naturally to be found. And yet in medicine Thistles are far from useless.
When beaten up or crushed in a mill to destroy the prickles, the leaves of all Thistles have proved excellent food for cattle and horses. This kind of fodder was formerly used to a great extent in Scotland before the introduction of special green crops for the purpose. The young stems of many of the Thistles are also edible, and the seeds of all the species yield a good oil by expression.
Two or three of our native species are handsome enough to be worthy of a place in gardens. Some species which flourish in hotter and drier climates than our own, such as the handsome Yellow Thistles of the south of Europe, are cultivated for that purpose, and have a classical interest, being mentioned by Hesiod as the flower of summer. This striking plant, crowned with its golden flowers, is abundant throughout Sicily. The Fish-bone Thistle , from Syria, is also a very handsome plant. A grand Scarlet Thistle from Mexico was grown in England some fifty years ago, but is now never seen.
The thistle is the national flower of Scotland. Legend has it that an invading Norse army was attempting to sneak up at night upon a Scottish army's encampment. One barefoot Norseman had the misfortune to step upon a thistle, causing him to cry out in pain, thus alerting the Scots to the presence of the Norse invaders.
I have no idea which one of the many varieties of thistle I photographed yesterday, but many of their names belie their characterization as weeds. For example, there are holy thistles, melancholy thistles, creeping plume thistles, woolly-headed thistles, milk thistles and dwarf thistles, as well as the yellow thistles, fish-bone thistles and scarlet thistles mentioned by Mrs. Grieve above. Here is my photo (double-click to enlarge):