Aerial parts.
The bugle tastes bitter, it is also a potent astringent, and aromatic as well. However, there are differing opinions on its value as an herbal medicine. In addition, the bugle also possesses mildly analgesic properties, and it is still used from time to time in herbal medicine as a wound healing herb. Traditionally, the bugle has also been used to cleanse and detoxify the liver, and the herb is also said to have a mild laxative action. The remedies made from the bugle are specifically used for treating over-active thyroid glands and the symptoms such a disorder induces in the body, particularly if these physical symptoms include problems such as tightness of the chest when breathing, cardiac palpitation and shaking or quivering muscles. Whenever cardiac palpitations are of nervous origin, it is quite safe to use the bugle as an herbal relaxant. The weakened heart will be aided by the bugle if there is an associated accumulation of water inside the body of the patient. The bugle is also used as a major herbal sedative in cases of cough, it helps to relieve and ease irritating coughs, particularly when such persistent coughs come about due to nervous disorders.
The bugle is found in the wild in Europe, parts of North Africa, and some parts of Asia. In North America the bugle has become naturalized since it was brought over from Europe in the colonial period. The bugle grows best in damp woods and on grassy and mountainous regions. The usual time to harvest the bugle is early in the summer when the plant is in full floral bloom. The bugle grows well in soils which are rich in humus, particularly so in moisture retentive soils. Plants prefer partially shaded sites. The herb also grows well on marshy soils and in spring meadows especially if they have some shaded areas. Once established at a site, the bugle is moderately resistant to drought and grows well in dry shade, but, prolonged moisture loss or severe drought can bring great stress on the plants and cause permanent damage. The seeds of the bugle are not always ripened as the plant does not always propagate by seeds. Bugle spreads far and freely by means of the many runners it gives off and can soon form an extensive patch under suitable conditions on the original site. The bugle comes in many varieties and number of these varieties have been selected for their ornamental value and are grown in gardens, several of these varieties are variegated and these forms are particularly used as ground cover plants for dry shade in many gardens and herbaria. Exposure to strong sunlight is not a problem for the purple-leafed form, the plant often called the 'Atropurpurea' provided that the soil at the site is not dry or lacking in moisture. The bugle is considered to be a plant which is beneficial for bees and butterflies - apiarist grow the bugle as a source of nectar for bees. The bugle can be propagated using the seeds. The seeds must be sown in the spring or in the fall on a cold frame if germination is to be assured. Bugle seeds normally take three or four weeks at 10�C to germinate, though the rate of germination can be erratic at most times. Once the seeds have germinated and seedlings emerge, each seedling can be prick out as soon as they grow large enough to handle and planted out in individual sites during the summer. The runners undergo division any time of the year and a plant at one site can spread out fairly rapidly over an area through the runners. Propagation through the use of the runners is quite easy; the divided runners can be planted straight out into the sites they will permanently occupy if necessary to negate crowding.
Bugle contains iridoid glycosides including harpagide, which is also found in devil's claw.
Bugle infusion: this infusion can be prepared by pouring a cup of boiling water on a teaspoonful of the dried herb and allowing the herb to infuse into the water for ten to fifteen minutes, drain and cool the liquid. Once strain, the infusion can be drunk thrice everyday for alleviating various ailments. Bugle tincture: the tincture of the herb can be taken at doses of 1-2ml thrice daily for relieving a wide variety of symptoms caused by nervous disorders.
Bugle should ideally be harvested in the period immediately preceding the opening of the floral buds in spring.