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Cistaceae FAMILY

Helianthemum nummularium

Helianthemum nummularium

Edibility
0/5
Medicinal
1/5

Safety & Hazards

None known

Cultivation Details

HabitEvergreen Shrub
GrowthFast

Requires an open sunny position in a light well-drained soil with a pH between 5.5 and 8[1]. Plants are hardy to at least -10°c[1]. A vigorous plant suitable for the rock garden, crevices in walls or gravel beds[1]. Plants are short-lived, though, soon becoming leggy or sparse, and require fairly frequent replacement[1]. The flowers only open in bright sunshine[1]. Plants resent root disturbance and should be placed in their permanent positions as soon as possible[1]. A polymorphic species[2], there are some named forms that have been selected for their ornamental value[1]. Plants are generally pest and disease-free[1]. Plants in this genus are notably resistant to honey fungus[1].

Propagation

Seed - sow spring in a greenhouse. When they are large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for at least their first winter. Plant them out into their permanent positions in late spring or early summer, after the last expected frosts. Cuttings of half-ripe wood, 6 - 8cm with a heel, late summer in a sandy soil in a frame[1]. Cite as: Temperate Plants Database, Ken Fern. temperate.theferns.info. 2026-02-21. <temperate.theferns.info/plant/Helianthemum+nummularium>

Pollinators

Insects, self

References

  1. [1]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.
  2. [2]Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement. — Bean. W. · Murray · 1981 · ISBN - ↩︎A classic with a wealth of information on the plants, but poor on pictures.
  3. [3]Flora of the British Isles. — Clapham, Tutin and Warburg. · Cambridge University Press · 1962 · ISBN - ↩︎A very comprehensive flora, the standard reference book but it has no pictures.
  4. [4]Handbook of the Bach Flower Remedies — Chancellor. P. M. · C. W. Daniel Co. Ltd. · 1985 · ISBN 85207 002 0 ↩︎Details the 38 remedies plus how and where to prescribe them.