How to Prune rock rose 'Prima Donna'?
Shorten flowered shoots to about 1.5–2.5 cm from the previous year's growth. Prune after flowering has finished.

rock rose 'Prima Donna' · Helianthemum 'Prima Donna'
Grow in moderately fertile, neutral to alkaline, well-drained soil in full sun. Will not tolerate waterlogging. May benefit from protection in cold winters
Shorten flowered shoots to about 1.5–2.5 cm from the previous year's growth. Prune after flowering has finished.