How to Fertilize auricula 'Prometheus'?
Weak alpine plant feed every four weeks spring and summer time

auricula 'Prometheus' · Primula auricula 'Prometheus'
Double 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
Weak alpine plant feed every four weeks spring and summer time