How to Prune Hemerocallis 'Stack the Deck'?
Cut back flower stems after flowering has finished. Remove dead foliage as required

Hemerocallis 'Stack the Deck' · Hemerocallis 'Stack the Deck'
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.
Cut back flower stems after flowering has finished. Remove dead foliage as required