How to Fertilize common rasp-fern?
Balanced perennial feed every four weeks spring through summer growth

common rasp-fern · Doodia media
Under glass grow in an open, humus-rich compost such as one part each of loam, medium-grade bark and charcoal, two parts sharp sand and three parts leaf mould, in bright, filtered light. Outdoors grow in moist, acid soil in sheltered, partial shade and protect from frost
Balanced perennial feed every four weeks spring through summer growth