How to Prune auricula 'Adrian'?
Deadhead, and remove dead or damaged leaves, as necessary

auricula 'Adrian' · Primula auricula 'Adrian'
Alpine auriculas are best grown in pots in an alpine house or cold frame, in a mix of equal parts loam-based potting compost, leaf mould, peat or peat-substitute, and grit. Alternatively, grow in moderately fertile, moist but well-drained, humus-rich soil in full sun or partial shade
Deadhead, and remove dead or damaged leaves, as necessary