How to Fertilize daylily 'Bertie Ferris'?
Slow-release feed spring plus diluted liquid feed every thirty days

daylily 'Bertie Ferris' · Hemerocallis 'Bertie Ferris'
Grow in fertile, moist but well-drained soil preferably in full sun. Flowering is likely to be poor in shadier situations. Tolerant of heavy clay and poorer soils. May need watering in spring to early summer in dry conditions to ensure flowering. See Hemerocallis cultivation or daylily cultivation for details
Slow-release feed spring plus diluted liquid feed every thirty days