How to Fertilize hen and chickens fern?
Very dilute fern feed monthly during warm active frond growth

hen and chickens fern · Asplenium bulbiferum
Also known as: mother spleenwort; New Zealand common spleenwort
Under glass grow in a mix of equal parts loam, coarse leaf mould, sharp sand and charcoal. Water moderately when in growth, water sparingly over winter. When in growth apply a half-strength balanced liquid fertiliser monthly. Grow outdoors in humus-rich, moist but well-drained soil. Bright midday sun can cause damage
Very dilute fern feed monthly during warm active frond growth