Definition of helianthemum in English:

helianthemum

noun

  • A rockrose of the genus "Helianthemum"

    • ‘And in their season, they all produce flowers - white or pink carpets of thymes, crowds of yellow, button-like flowers on santolina, while helianthemums open fresh, silky-petalled flowers each day, in all shades from white, through pink to orange and red.’
    • ‘More importantly, the work will allow for the native rock roses, or helianthemums, to flourish, creating a more abundant food source for the Durham Brown Argus butterfly, which is making a come-back in this area through careful management of the ecology locally and the warming of the climate generally.’
    • ‘I already have quite a few of those, but apart from the helianthemums, things are either blooming sparsely or not at all.’
    • ‘Rock roses, however, and sun roses (helianthemums), are among the oldest and also the best.’
    • ‘I never thought of using helianthemums as cascaders but sounds like a great idea for shorter cascades.’
    • ‘Keep heathers, lavenders, helianthemums and spireas from getting straggly by shearing them back in summer after they bloom.’
    • ‘They also created a rock garden of local sandstone planted up with helianthemums and dwarf shrubs.’
    • ‘Today the gardens are rich in helianthemums, dwarf shrubs, rare magnolias and hybrid rhododendrons.’
    • ‘Shearing back after the initial bloom flush (as one would do with helianthemums) should result in additional flowering.’
    • ‘One of my favorites would be sunroses, helianthemums, but those may not be hardy for you.’
    • ‘They look especially good combined with all the yellows and golds of autumn, an effective contrast in color and shape to sunflowers and helianthemums.’

Origin

Modern Latin, from Greek hēlios sun + anthemon flower (because the flowers open in sunlight).

Pronunciation

helianthemum

/ˌhēlēˈanTHəməm/