Hierochloe odorata

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Hierochloe odorata
Light:Full Sun Part Shade
Moisture:Xeric Mesic Hydric
Hardiness:5
Soil pH:5.6-8.4
Height:2'
Width:2'
Blooms:Mid Spring-Late Spring
Native to:
Edible Rating:PFAF Edibility RatingPFAF Edibility Rating
Medicinal Rating:PFAF Medicinal RatingPFAF Medicinal Rating
Tea:Yes
Poisonous

Hierochloe odorata (common name: holy grass)

Propagation: Seed - sow spring in situ and only just cover the seed[1]. Germination usually takes place within 2 weeks.

If the seed is in short supply it can be sown in the cold frame in the spring. When large enough to handle, prick the seedlings out into individual pots and plant them out in early summer.

Division in spring or summer[1]. Very simple, virtually any part of the root will regrow to make a new plant[K].

Cultivation: Prefers a damp position in a rich soil but succeeds in most soils including quite dry conditions[1]. Grows best in a sunny position[2].

The plants have a running root system and can spread aggressively when grown in suitable conditions[3].

The plant, as it dries, emits a powerful scent of newly mown hay[4].

Range: Central and northern Europe, including Britain, to N. Asia and N. America.

Habitat: Wet banks in only a few sites in Scotland[5].

Edibility: Seed - cooked[6]. Small and fiddly to use. It almost certainly does not contain coumarin and should be safe to use.

An essential oil from the leaves is used as a food flavouring in sweets and soft drinks. It has a strong vanilla-like flavour[7].

The leaves are added to vodka as a flavouring.[2]

The plant is said to be used as a colouring agent[7] but no more details are given.

Medicinal: A tea made from the leaves is used in the treatment of fevers, coughs, sore throats, chafing and venereal infections[8][9]. It is also used to stop vaginal bleeding and to expel afterbirth[8]. The stems can be soaked in water and used to treat windburn and chapping and as an eyewash[9]. Some caution is advised when using this plant internally, see the notes above on toxicity[8]. The leaves are harvested in the summer and dried for later use[2].

Smoke from the burning leaves has been inhaled in the treatment of colds[9].

Usage: The dried leaves are used as an incense[10][11][12], they were formerly also used as a strewing herb[13][10][2] and have been used as a stuffing in pillows and mattresses[9]. They have also been used as an insect repellent in the clothes cupboard where they impart a nice smell to the clothes[12][2].

The leaves are used to make aromatic baskets[10][11][12][14][15]. The wet leaves can be sewn together, dried until they are tight and then resin used over the stitches to make a waterproof container[9].

The leaves can be soaked in water to make a tonic hair wash[9].

An essential oil distilled from the leaves is used in perfumery where it acts as an excitant and fixative for other aromas[2].

The plant has a very aggressive root system and has been planted to stabilize banks[3].

Pollinators: Wind

Soil: Can grow in light, medium, and heavy soils.

Flower Type: Hermaphrodite

Known Hazards: The plant contains coumarin, this is toxic if taken internally[14] and is sometimes considered to be carcinogenic[8].

Also Known As: H. borealis.

Links

References

  1. 1.0 1.1 1.2 Grounds, Roger. Ornamental Grasses. Christopher Helm, 1989.
  2. 2.0 2.1 2.2 2.3 2.4 2.5 Bown, Deni. Royal Horticultural Society Encyclopaedia of Herbs and Their Uses. Dorling Kindersley, 1995.
  3. 3.0 3.1 Komarov, Vladimir. Flora of the USSR. Gantner Verlag, 1968.
  4. Genders, Roy. Scented Flora of the World. Robert Hale, 1994.
  5. Clapham, Arthur and Tom Tootin, Edmund Warburg. Flora of the British Isles. Cambridge University Press, 1962.
  6. Tanaka, Tyōzaburō. Tanaka's Cyclopaedia of Edible Plants of the World. Keigaku Publishing, 1976.
  7. 7.0 7.1 Facciola, Stephen. Cornucopia - A Source Book of Edible Plants. Kampong Publications, 1990.
  8. 8.0 8.1 8.2 8.3 Foster, Steven and Billy Tatum. Medicinal Plants of Eastern and Central North America. Houghton Mifflin, 1990.
  9. 9.0 9.1 9.2 9.3 9.4 9.5 Moerman, Daniel. Native American Ethnobotany. Timber Press, 1998.
  10. 10.0 10.1 10.2 Uphof, Johannes. Dictionary of Economic Plants. Weinheim, 1959.
  11. 11.0 11.1 Usher, George. A Dictionary of Plants Used by Man. Constable, 1974.
  12. 12.0 12.1 12.2 Turner, Nancy. Plants in British Columbian Indian Technology. British Columbia Provincial Museum, 1979.
  13. Chittendon, Fred. RHS Dictionary of Plants. Oxford University Press, 1951.
  14. 14.0 14.1 Buchanan, Rita. A Weavers Garden.
  15. Hill, Albert. Economic Botany. The Maple Press, 1952.