How to Fertilize wild saffron?
Balanced perennial feed every four weeks from spring through summer

wild saffron · Crocus cartwrightianus
Grow in a bulb frame or alpine house in a mix of equal parts loam, leaf mould and sharp sand or grit. Water freely in the growing season and apply a low-nitrogen fertiliser monthly. Keep completely dry in summer dormancy
Balanced perennial feed every four weeks from spring through summer