Galium odoratum
Sweet Woodruff
a perennial member of the Galium genus in the family Rubiaceae.
Taxonomy and growth
Uses
Edible uses
This section contains historical Plants For A Future notes marked noncommercial.
Leaves - raw or cooked[21]. The leaves are coumarin-scented (like freshly mown hay), they are used as a flavouring in cooling drinks[9][22][18] and are also added to fruit salads etc[6][10]. The leaves are soaked in white wine to make 'Maitrank', an aromatic tonic drink that is made in Alsace[13]. A fragrant and delicious tea is made from the green-dried leaves and flowers[9][6][17]. Slightly wilted leaves are used, the tea has a fresh, grassy flavour[10]. The sweet-scented flowers are eaten or used as a garnish[6].
- Product or use
- Condiment
- Product or use
- Drink
- Product or use
- Tea
- Plant part
- Flowers
- Plant part
- Leaves
Medicinal uses
Historical medicinal uses. These records describe reported uses. They do not establish safety or effectiveness. Ask a qualified health professional before using any plant medicinally.
This section contains historical Plants For A Future notes marked noncommercial.
Sweet woodruff was widely used in herbal medicine during the Middle Ages, gaining a reputation as an external application to wounds and cuts and also taken internally in the treatment of digestive and liver problems[20]. In current day herbalism it is valued mainly for its tonic, diuretic and anti-inflammatory affect[16]. The leaves are antispasmodic, cardiac, diaphoretic, diuretic, sedative[22][2][12][10]. An infusion is used in the treatment of insomnia and nervous tension, varicose veins, biliary obstruction, hepatitis and jaundice[22][13]. The plant is harvested just before or as it comes into flower and can be dried for later use[22]. One report says that it should be used with caution[12] whilst another says that it is entirely safe[22]. Excessive doses can produce dizziness and symptoms of poisoning[17]. The dried plant contains coumarins and these act to prevent the clotting of blood - though in excessive doses it can cause internal bleeding[16]. The plant is grown commercially as a source of coumarin, used to make an anticoagulant drug[17]. Do not use this remedy if you are taking conventional medicine for circulatory problems or if you are pregnant[16]. A number of species in this genus contain asperuloside, a substance that produces coumarin and gives the scent of new-mown hay as the plant dries[13]. Asperuloside can be converted into prostaglandins (hormone-like compounds that stimulate the uterus and affect blood vessels), making the genus of great interest to the pharmaceutical industry[13]. A homeopathic remedy made from the plant is used in the treatment of inflammation of the uterus[13].
- Product or use
- Antispasmodic
- Product or use
- Cardiac
- Product or use
- Diaphoretic
- Product or use
- Diuretic
- Product or use
- Homeopathy
- Product or use
- Sedative
Material uses
This section contains historical Plants For A Future notes marked noncommercial.
A red dye is obtained from the root[4]. Soft-tan and grey-green dyes are obtained from the stems and leaves[4]. A good ground-cover plant for growing on woodland edges or in the cool shade of shrubs[14][10]. It spreads rapidly at the roots[19][8][11]. It is an ideal carpeting plant for bulbs to grow through[K]. Although the fresh plant has very little aroma, as it dries it becomes very aromatic with the scent of newly-mown grass and then retains this aroma for years[9][10]. It is used in the linen cupboard to protect from moths etc.[20][3] It was also formerly used as a strewing herb and is an ingredient of pot-pourri[13]. It was also hung up in bunches in the home in order to keep the rooms cool and fragrant during the summertime[15].
- Product or use
- Dye
- Product or use
- Pot-pourri
- Product or use
- Repellent
- Product or use
- Strewing
Ecology and functions
- Ecosystem niche
- Soil surface
Environment
- Range
- Northern and central Europe, including Britain, south and east to N. Africa and Siberia.
- Habitat
- Woodland and shady areas[20][3] on damp calcareous and base rich soils[5]. Often found in beech woods[17].
- Light
- partial sun
- Shade tolerance
- permanent shade
- Water
- moderate
- Hardiness
- Zone 5+
- Soil textures
- sandy, loamy, clay
- Soil pH
- very acid, acid, neutral, alkaline, very alkaline
- Tolerates Nutritionally Poor Soil
- No
- Drought
- intolerant
Propagation
This section contains historical Plants For A Future notes marked noncommercial.
Seed - best sown in situ as soon as it is ripe in late summer[10]. The seed can also be sown in spring though it may be very slow to germinate[10]. A period of cold stratification helps reduce the germination time. Lots of leafmold in the soil and the shade of trees also improves germination rates. Division in spring. The plant can also be successfully divided throughout the growing season if the divisions are kept moist until they are established[10]. Very easy, larger clumps can be replanted direct into their permanent positions, though it is best to pot up smaller clumps and grow them on in a cold frame until they are rooting well. Plant them out in the spring. Cuttings of soft wood, after flowering, in a frame.
Cultivation
This section contains historical Plants For A Future notes marked noncommercial.
Prefers a loose moist leafy soil in some shade[10]. Tolerates dry soils but the leaves quickly become scorched when growing in full sun[10]. This species does not thrive in a hot climate[10]. Prefers a moist calcareous soil[22][2][3]. Dislikes very acid soils[7]. Tolerates a pH in the range 4.3 to 8.3. This species is very tolerant of atmospheric pollution and grows well in towns[11]. A very cold-hardy plant, tolerating temperatures down to about -25°c[7]. Sweet woodruff is occasionally cultivated in the herb garden for its medicinal and other uses. The dried foliage has the sweet scent of newly mown hay[15]. A very ornamental plant[1] but it spreads rapidly[19] and can be invasive[10]. However, this is rarely to the detriment of other plants since these are normally able to grow through it[10]. It does no harm to any plants more than 60cm tall[11].
References
F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956 Oxford University Press 1951-00-00
Triska. Dr. Hamlyn Encyclopaedia of Plants. Hamlyn 1975-00-00 ISBN 0-600-33545-3
Holtom. J. and Hylton. W. Complete Guide to Herbs. Rodale Press 1979-00-00 ISBN 0-87857-262-7
Grae. I. Nature's Colors - Dyes from Plants. MacMillan Publishing Co. New York. 1974-00-00 ISBN 0-02-544950-8
Clapham, Tootin and Warburg. Flora of the British Isles. Cambridge University Press 1962-00-00
Facciola. S. Cornucopia - A Source Book of Edible Plants. Kampong Publications 1990-00-00 ISBN 0-9628087-0-9
Phillips. R. & Rix. M. Perennials Volumes 1 and 2. Pan Books 1991-00-00 ISBN 0-330-30936-9
Royal Horticultural Society. Ground Cover Plants. Cassells. 1989-00-00 ISBN 0-304-31089-1
Hedrick. U. P. Sturtevant's Edible Plants of the World. Dover Publications 1972-00-00 ISBN 0-486-20459-6
Huxley. A. The New RHS Dictionary of Gardening. 1992. MacMillan Press 1992-00-00 ISBN 0-333-47494-5
Thomas. G. S. Plants for Ground Cover J. M. Dent & Sons 1990-00-00 ISBN 0-460-12609-1
Lust. J. The Herb Book. Bantam books 1983-00-00 ISBN 0-553-23827-2
Bown. D. Encyclopaedia of Herbs and their Uses. Dorling Kindersley, London. 1995-00-00 ISBN 0-7513-020-31
Baines. C. Making a Wildlife Garden.
Genders. R. Scented Flora of the World. Robert Hale. London. 1994-00-00 ISBN 0-7090-5440-8
Chevallier. A. The Encyclopedia of Medicinal Plants Dorling Kindersley. London 1996-00-00 ISBN 9-780751-303148
Stuart. M. (Editor) The Encyclopedia of Herbs and Herbalism Orbis Publishing. London. 1979-00-00 ISBN 0-85613-067-2
Vilmorin. A. The Vegetable Garden. Ten Speed Press ISBN 0-89815-041-8
Knight. F. P. Plants for Shade. Royal Horticultural Society. 1980-00-00 ISBN 0-900629-78-9
Grieve. A Modern Herbal. Penguin 1984-00-00 ISBN 0-14-046-440-9
Elias. T. and Dykeman. P. A Field Guide to N. American Edible Wild Plants. Van Nostrand Reinhold 1982-00-00 ISBN 0442222009
Launert. E. Edible and Medicinal Plants. Hamlyn 1981-00-00 ISBN 0-600-37216-2