Helianthemum

The helianthemum (also known as Rock rose) is a vastly popular alpine sub-shrub, of which there are many named cultivars. They grow to about 15-30cm/6-l2in high, with a spread of 30-60cm/12-24in. Helianthemum ‘Jubilee’ has a mass of double pale yellow flowers, about 2.5cm/1 in across, held in terminal clusters, in early and midsummer. The leaves are small, elliptical in shape, dark green above and grey-green below.

Cultivation and propagation

Plant helianthemum in early fall or early spring in any well drained soil and in full sun. You will get a second flush of flowers if the plants are trimmed over in midsummer.

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Helianthemum ‘Jubilee’

At the end of flowering, cut the stems back hard, or the shrub becomes straggly, flowers less freely and is shorter lived. Take short cuttings with a heel after the first flowering, and put in a cold frame to root. This is a hardy plant. This plant is likely to need clipping. Helianthemum is good for chalky/sandy soil.

Use


A good plant to tumble over a low wall, or in company with other alpines in a raised bed, or even holes in paving or a dry wall.

Similar plants

H. Wisley Primrose’ (single, with grey-green leaves); H. ‘Raspberry Ripple’ (white flower with red centers).

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Helianthemum appeninum

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Helianthemum oelandicum

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