How to Propagate plantain lily 'Mountain Snow'?
Propagate by division in early spring or late summer

plantain lily 'Mountain Snow' · Hosta 'Mountain Snow'
Grow in fertile soil that does not dry out, in a shady spot away from direct sun and 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