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Geraniaceae FAMILY

Pelargonium capitatum

Pelargonium capitatum

Edibility
0/5
Medicinal
3/5

Safety & Hazards

None known

Cultivation Details

HabitEvergreen Shrub
Growth—

Requires a light well-drained neutral to alkaline soil in a sunny position[1, 2]. Plants are not very cold-hardy in Britain, tolerating temperatures down to about 0°c[3]. They generally require greenhouse protection but might succeed outdoors when grown in a very sheltered warm spot in the mildest parts of the country[4]. 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[5]. The plants need to be kept fairly dry in the winter[2]. 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[5]. When bruised, the leaves release a scent of roses[6]. This species is sometimes cultivated for its rose-scented essential oil[1, 7].

Propagation

Seed - best sown as soon as it is ripe in a greenhouse. 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[2]. 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 are quite easy and succeed at almost any time in the growing season, although early summer is the best time in order for the new plant to become established before winter[7, PFAF]. Cuttings usually root within 3 weeks[7]. Cite as: Temperate Plants Database, Ken Fern. temperate.theferns.info. 2026-02-21. <temperate.theferns.info/plant/Pelargonium+capitatum>

Pollinators

Insects

References

  1. [1]The RHS Gardener's Encyclopedia of Plants and Flowers — Brickell. C. · Dorling Kindersley Publishers Ltd. · 1990 · ISBN 0-86318-386-7 ↩︎Excellent range of photographs, some cultivation details but very little information on plant uses.
  2. [2]The New RHS Dictionary of Gardening. 1992. — Huxley. A. · MacMillan Press · 1992 · ISBN 0-333-47494-5 ↩︎Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
  3. [3]Conservatory and Indoor Plants Volumes 1 & 2 — Phillips. R. & Rix. M. · Pan Books, London. · 1998 · ISBN 0-330-37376-5 ↩︎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.
  4. [4]RHS Dictionary of Plants plus Supplement. 1956 — F. Chittendon. · Oxford University Press · 1951 · ISBN - ↩︎Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaced in 1992 by a new dictionary (see [ 200 ]).
  5. [5]Encyclopaedia of Herbs and their Uses. — Bown. D. · Dorling Kindersley, London. · 1995 · ISBN 0-7513-020-31 ↩︎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.
  6. [6]Scented Flora of the World. — Genders. R. · Robert Hale. London. · 1994 · ISBN 0-7090-5440-8 ↩︎An excellent, comprehensive book on scented plants giving a few other plant uses and brief cultivation details. There are no illustrations.
  7. [7]PlantZAfrica.com — http://www.plantzafrica.com ↩︎An excellent site giving detailed descriptions and uses of many S. African plants.
  8. [8]A Modern Herbal. — Grieve. · Penguin · 1984 · ISBN 0-14-046-440-9 ↩︎Not so modern (1930's?) but lots of information, mainly temperate plants.
  9. [9]The Garden. Volume 111. — RHS. · Royal Horticultural Society · 1986 · ISBN - ↩︎Snippets of information from the magazine of the RHS, including an article on Crambe maritima and another on several species thought to be tender that are succeeding in a S. Devon garden.
  10. [10]Minor Oil Crops — Axtell. B.L.; Fairman. R.M. · FAO; Rome. · 1992 · http://www.fao.org/docrep/X5043E/x5043E00.htm#Contents · ISBN 92-5-103128-2 ↩︎A well-written small guide that includes information on over 20 species. Also available for download from the internet.
  11. [11]Effect of Athamanta sicula oil on inhibition of mild steel corrosion in 1M HCl — A. Bouyanzer et al · 2015 · http://derpharmachemica.com/archive.html · ISBN 0975-413X ↩︎Research paper on the value of plant extracts, especially Athamanta sicula, in protecting steel from acid corrosion.
  12. [PFAF]Plants for a Future — pfaf.org ↩︎