Parts Used:—Root, herb and seeds (fruits).
Burdock is any of a group of biennial thistles in the genus Arctium, family Asteraceae. Common Burdock (A. minus) grows wild throughout most of North America, Europe and Asia. It grows freely throughout England (though rarely in Scotland) on waste ground and about old buildings, by roadsides and in fairly damp places.
The Burdock, the only British member of its genus, belongs to the Thistle group of the great order, Compositae.
Description:—A stout handsome plant, with large, wavy leaves and round heads of purple flowers. It is enclosed in a globular involucre of long stiff scales with hooked tips, the scales being also often interwoven with a white, cottony substance.
The whole plant is a dull, pale green, the stem about 3 to 4 feet and branched, rising from a biennial root. The lower leaves are very large, on long, solid foot-stalks, furrowed above, frequently more than a foot long heart-shaped and of a grey colour on their under surfaces from the mass of fine down with which they are covered. The upper leaves are much smaller, more egg-shaped in form and not so densely clothed beneath with the grey down.
The plant varies considerably in appearance, and by some botanists various subspecies, or even separate species, have been described, the variations being according to the size of the flower-heads and of the whole plant, the abundance of the whitish cottonlike substance that is sometimes found on the involucres, or the absence of it, the length of the flower-stalks, etc.
The flower-heads are found expanded during the latter part of the summer and well into the autumn: all the florets are tubular, the stamens dark purple and the styles whitish. The plant owes its dissemination greatly to the little hooked prickles of its involucre, which adhere to everything with which they come in contact, and by attaching themselves to coats of animals are often carried to a distance…..click & see
Plants of the genus Arctium have dark green leaves that can grow up to 18″ (45 cm) long. They are generally large, coarse and ovate, with the lower ones being heart-shaped. They are woolly underneath. The leafstalks are generally hollow. Arctium species generally flower from July through October.
The prickly heads of these Old World plants are noted for easily catching on to fur and clothing, thus providing an excellent mechanism for seed dispersal. Burrs cause local irritation and can possibly cause intestinal hairballs in pets. However, most animals avoid ingesting these plants.
A large number of species have been placed in genus Arctium at one time or another, but most of them are now classified in the related genus Cousinia. The precise limits between Arctium and Cousinia are hard to define; there is an exact correlation between their molecular phylogeny. The burdocks are sometimes confused with the cockleburs (genus Xanthium) and rhubarb (genus Rheum).
The roots of burdock, among other plants, are eaten by the larva of the Ghost Moth (Hepialus humuli). The plant is used as a food plant by other Lepidoptera including Brown-tail, Coleophora paripennella, Coleophora peribenanderi, The Gothic, Lime-speck Pug and Scalloped Hazel.
The green, above-ground portions may cause contact dermatitis in humans due to the lactones the plant produces.
Cultivation:–-As the Burdock grows freely in waste places and hedgerows, it can be collected in the wild state, and is seldom worth cultivating.
It will grow in almost any soil, but the roots are formed best in a light well-drained soil. The seeds germinate readily and may be sown directly in the field, either in autumn or early spring, in drills 18 inches to 3 feet apart, sowing 1 inch deep in autumn, but less in spring. The young plants when well up are thinned out to 6 inches apart in the row.
Yields at the rate of 1,500 to 2,000 lb. of dry roots per acre have been obtained from plantations of Burdock.
The roots are dug in July, and should be lifted with a beet-lifter or a deep-running plough. As a rule they are 12 inches or more in length and about 1 inch thick, sometimes, however, they extend 2 to 3 feet, making it necessary to dig by hand. They are fleshy, wrinkled, crowned with a tuft of whitish, soft, hairy leaf-stalks, grey-brown externally, whitish internally, with a somewhat thick bark, about a quarter of the diameter of the root, and soft wood tissues, with a radiate structure.
The seeds (or fruits) are collected when ripe. They are brownish-grey, wrinkled, about 1/4 inch long and 1/16 inch in diameter. They are shaken out of the head and dried by spreading them out on paper in the sun.
The taproot of young burdock plants can be harvested and eaten as a root vegetable. While generally out of favor in modern European cuisine, it remains popular in Asia, particularly in Japan where A. lappa (Greater burdock) is called gobo. Plants are cultivated for their slender roots, which can grow about 1 meter long and 2 cm across. Burdock root is very crisp and has a sweet, mild, and pungent flavor with a little muddy harshness that can be reduced by soaking julienne/shredded roots in water for five to ten minutes. Immature flower stalks may also be harvested in late spring, before flowers appear; the taste resembles that of artichoke, to which the burdock is related. A popular Japanese dish is kinpira gobo, julienned or shredded burdock root and carrot, braised with soy sauce, sugar, mirin and/or sake, and sesame oil; another is burdock makizushi (sushi filled with pickled burdock root rather than fish; the burdock root is often artificially colored orange to resemble a carrot). In the second half of the 20th century, burdock achieved international recognition for its culinary use due to the increasing popularity of the macrobiotic diet, which advocates its consumption. It also contains a fair amount of gobo dietary fiber (GDF, 6g per 100g), calcium, potassium, amino acids, and is also low calorie. It also contains polyphenols that causes darkened surface and muddy harshness by formation of tannin-iron complexes though the harshness shows excellent harmonization with pork in miso soup (tonjiru) and Japanese-style pilaf (takikomi gohan).
Dandelion and burdock is a soft drink that has long been popular in the United Kingdom, and authentic recipes are sold by health food shops, but it is not clear whether the cheaper supermarket versions actually contain either plant. Burdock is believed to be a galactagogue, a substance that increases lactation.
Parts Used Medicinally-:–The dried root from plants of the first year’s growth forms the official drug, but the leaves and fruits (commonly, though erroneously, called seeds) are also used.
Constituents:-–Inulin, mucilage, sugar, a bitter, crystalline glucoside – Lappin-a little resin, fixed and volatile oils, and some tannic acid.
The roots contain starch, and the ashes of the plant, burnt when green, yield carbonate of potash abundantly, and also some nitre.
Burdock root has a sweetish and mucilaginous taste.
Burdock leaves, which are less used than the root, are collected in July. For drying, follow the drying of Coltsfoot leaves. They have a somewhat bitter taste.
Folk herbalists consider dried burdock to be a diuretic, diaphoretic, and a blood purifying agent. The seeds of A. lappa are used in traditional Chinese medicine,.
Burdock has been a favorite medicinal herb for centuries and is used for many ailments. Burdock root oil extract, also called Bur oil, is popular in Europe as a scalp treatment applied to improve hair strength, shine and body, help reverse scalp conditions, and combat hair loss. It is used as a natural hair oil to help get rid of scalp itching and dandruff, promote healing of skin and scalp conditions. Modern studies indicate that Burdock root oil extract is rich in phytosterols and essential fatty acids (including rare long chain EFAs), the nutrients required to maintain healthy scalp and promote natural hair growth. Regular use of Burdock oil helps restore and maintain healthy scalp and hair. The oil helps combat scalp itching, redness and dandruff, and promotes recovery of scalp irritation. It combines immediate relieving effect with nutritional support of normal functions of sebaceous glands and hair follicles.
For centuries, Burdock oil has been used to produce Burdock herbal medicines. High-quality Burdock oil has a mild attractive aroma which comes from the volatile root ingredients. This unique aroma may be used to identify genuine Burdock oil and avoid adulterated products.
Medicinal Action and Uses:—Alterative, diuretic and diaphoretic. One of the best blood purifiers. In all skin diseases, it is a certain remedy and has effected a cure in many cases of eczema, either taken alone or combined with other remedies, such as Yellow Dock and Sarsaparilla.
The root is principally employed, but the leaves and seeds are equally valuable. Both root and seeds may be taken as a decoction of 1 OZ. to 1 1/2 pint of water, boiled down to a pint, in doses of a wineglassful, three or four times a day.
The anti-scorbutic properties of the root make the decoction very useful for boils, scurvy and rheumatic affections, and by many it is considered superior to Sarsaparilla, on account of its mucilaginous, demulcent nature; it has in addition been recommended for external use as a wash for ulcers and scaly skin disorders.
An infusion of the leaves is useful to impart strength and tone to the stomach, for some forms of long-standing indigestion.
When applied externally as a poultice, the leaves are highly resolvent for tumours and gouty swellings, and relieve bruises and inflamed surfaces generally. The bruised leaves have been applied by the peasantry in many countries as cataplasms to the feet and as a remedy for hysterical disorders.
From the seeds, both a medicinal tincture and a fluid extract are prepared, of benefit in chronic skin diseases. Americans use the seeds only, considering them more efficacious and prompt in their action than the other parts of the plant. They are relaxant and demulcent, with a limited amount of tonic property. Their influence upon the skin is due largely to their being of such an oily nature: they affect both the sebaceous and sudoriferous glands, and probably owing to their oily nature restore that smoothness to the skin which is a sign of normal healthy action.
The infusion or decoction of the seeds is employed in dropsical complaints, more especially in cases where there is co-existing derangement of the nervous system, and is considered by many to be a specific for all affections of the kidneys, for which it may with advantage be taken several times a day, before meals.
Help taken from: en.wikipedia.org and www.botanical.com