How to Fertilize daylily 'Killer'?
Daylily feed every two to four weeks through warm blooming months

daylily 'Killer' · Hemerocallis 'Killer'
Grow in fertile, well drained soil, in areas that will not dry out in summer. Prefers full sun, flowering is likely to be reduced in shadier situations. Water freely from spring to summer. See Hemerocallis cultivation for details.
Daylily feed every two to four weeks through warm blooming months