Wisley Primrose Sun Rose

Wisley Primrose is an evergreen, spreading sun rose with grey-green leaves and single primrose-yellow flowers, each with a darker center. It forms a low mound for rock gardens, gravel beds, sunny banks, and the front of a border. The RHS profile identifies the selection as Helianthemum nummularium ‘Wisley Primrose’. ## Site and planting Plant in full sun and provide well-drained soil. The RHS lists chalk, clay, loam, and sand, while a nursery grower gives a typical size near 15 cm tall by 30 cm wide. Use grit or raise the planting area if the soil remains wet, and allow the plant to spread without crowding. [RHS plant profile](https://www.rhs.org.uk/plants/34005/helianthemum-nummularium-wisley-primrose/details) · [Kernock Plants profile](https://www.kernock.co.uk/acatalog/Helianthemum-Wisley-Primrose-U371.html) ## Seasonal interest The soft yellow flowers appear from late spring into summer above the grey-green foliage. The evergreen mound continues to edge a planting after its main flowering display. ## Maintenance Water while newly planted until established. Once settled, this cultivar is drought tolerant and needs only occasional water during a prolonged dry spell. Lightly trim the stems after flowering to maintain a compact shape, but avoid cutting into old woody growth.