How to Prune Primula marginata 'Caerulea'?
No pruning required

Primula marginata 'Caerulea' · Primula marginata 'Caerulea'
Grow in partial shade in moderately fertile, moist but well-drained, humus-rich soil. May also be grown in an alpine house or greenhouse/conservatory using a specialist alpine plant compost based on loam with added lime. Avoid wetting the foliage
No pruning required