How to Propagate plantain lily 'Blue Arrow'?
Propagate by division in early spring or late summer

plantain lily 'Blue Arrow' · Hosta 'Blue Arrow'
Grow in a shady spot in fertile soil that does not dry out, with shelter from cold, drying winds. Mulch annually in spring. Hostas in the ground may need watering during dry spells. See hosta cultivation for more detailed advice
Propagate by division in early spring or late summer