Everything about Helianthemum totally explained
Helianthemum (
rockrose,
sunroses,
rushrose, or
helianthemum) is a
genus of about 110 species of
evergreen or semi-evergreen
subshrubs. They are widely distributed in the
Americas,
Europe, and from
North Africa to
Asia Minor and
Central Asia, with the centre of diversity in the
Mediterranean region.
The
leaves are opposite, simple oval, 1-4 cm long and 0.5-2 cm broad, varying from glossy green to tomentose grey-green. The
flowers are 2-4 cm diameter, with five petals, white or yellow, occasionally tinged pink; in some species the flowers are bicoloured with a brighter yellow centre to act as a 'target' for pollinating
insects.
Helianthemum species are used as food plants by the
larvae of some
Lepidoptera species including
Large Grizzled Skipper and the
bucculatricid leaf-miners
Bucculatrix helianthemi and
Bucculatrix regaella (which both feed exclusively on
Helianthemum sessiliflorum) and the
Coleophora case-bearers
C. bilineella,
C. eupreta (feeds exclusively on
H. sessiliflorum),
C. ochrea (feeds exclusively on
Helianthemum) and
C. potentillae.
Selected species
Cultivation and uses
Several
Helianthemum species, and the numerous
hybrids and
cultivars derived from them, are widely grown as
ornamental plants, popular in
rockeries. A broader range of colours is available among the cultivars, including bright salmon-pink to dark red.
Further Information
Get more info on 'Helianthemum'.
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