Pelargonium capitatum - Rose-Scented Geranium

Famille: Geraniaceae, Genre: Pelargonium
Arbuste à feuilles persistantes (0.6m de haut par 0.6m de large).

Habitat

Exposition
Plein soleil
Humidité
Sol sec à moyen.
Sol
Sol léger à moyen. Nécessite un sol drainant.
pH
Sol acide ou calcaire
Rusticité
Zone 9
Habitat originel
Dunes and sandy hills near the sea from the south-west Cape to southern Natal[260].
Origine géographique
S. Africa.

Usages médicinaux

  • The whole plant is an aromatic, soothing, emollient herb with a rose-like aroma [238].
  • All parts of the plant are astringent [4].
  • It is taken internally as a remedy for minor digestive ailments, plus kidney and bladder disorders [238].
  • Externally, it is applied to rashes and cracked skin [238].
  • The leaves can be harvested and used as required [238].
  • The essential oil is a major component of geranium oil, which is used in aomatherapy and skin care [238].

Autres usages

  • An essential oil is obtained from the plant, it has a rose fragrance [104].
  • It is used in perfumery [188, 238].
  • The leaves are used in pot-pourri [238].

Culture

  • Requires a light well-drained neutral to alkaline soil in a sunny position [188, 200].
  • Plants are not very cold-hardy in Britain, tolerating temperatures down to about 0°c [260].
  • They generally require greenhouse protection but might succeed outdoors when grown in a very sheltered warm spot in the mildest parts of the country [1].
  • They can also be grown in containers that are placed outdoors in the summer and then brought into the greenhouse or conservatory for the winter [238].
  • The plants need to be kept fairly dry in the winter [200].
  • Very tolerant of pruning, they can be cut right down to the base in the autumn when bringing them back indoors, or in the spring to encourage lots of fresh growth [238].
  • When bruised, the leaves release a scent of roses [245].
  • Sometimes cultivated for its essential oil [188].

Propagation

  • graine - le mieux est de semer sous serre dès la fiin de la maturation .
  • Stored seed should be sown in early spring in a greenhouse .
  • The seed germinates best with a minimum temperature of 13°c, germination usually taking place within 2 weeks though it sometimes takes some months [200].
  • Prick out the seedlings into individual pots when they are large enough to handle and grow them on in the greenhouse for at least their first winter .
  • If trying them outdoors, plant them out in early summer and consider giving them extra protection during the winter .
  • Cuttings succeed at almost any time in the growing season but early summer is the best time in order for the new plant to become established before winter .

Calendrier

En fleur
5 - 7
En feuille
1 - 12

Pollinisation

Type de fleur
Hermaphrodite (les fleurs ont des organes mâles et femelles)
Auto-fertile
Oui

Divers

Pollution
Non
Autres réferences
[200]

Réferences

[1] F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956 1951.
Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaces in 1992 by a new dictionary (see [200]).
[4] Grieve. A Modern Herbal. 1984.
Not so modern (1930's?) but lots of information, mainly temperate plants.
[104] RHS. The Garden. Volume 111. 1986.
Snippets of information from the magazine of the RHS, including an article in Crambe maritima and another on several species thought to be tender that are succeeding in a S. Devon garden.
[188] Brickell. C. The RHS Gardener's Encyclopedia of Plants and Flowers 1990.
Excellent range of photographs, some cultivation details but very little information on plant uses.
[200] Huxley. A. The New RHS Dictionary of Gardening. 1992. 1992.
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
[238] Bown. D. Encyclopaedia of Herbs and their Uses. 1995.
A very well presented and informative book on herbs from around the globe. Plenty in it for both the casual reader and the serious student. Just one main quibble is the silly way of having two separate entries for each plant.
[245] Genders. R. Scented Flora of the World. 1994.
An excellent, comprehensive book on scented plants giving a few other plant uses and brief cultivation details. There are no illustrations.
[260] Phillips. R. & Rix. M. Conservatory and Indoor Plants Volumes 1 & 2 1998.
Excellent photos of over 1,100 species and cultivars with habits and cultivation details plus a few plant uses. Many species are too tender for outdoors in Britain though there are many that can be grown outside.