How to Fertilize Primula hirsuta?
Balanced perennial feed every four weeks from spring through summer

Primula hirsuta · Primula hirsuta
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
Balanced perennial feed every four weeks from spring through summer