How to Prune montbretia 'Firefly'?
No pruning required, except the removal of dead leaves and flower stems before new growth starts in spring

montbretia 'Firefly' · Crocosmia 'Firefly'
Plant 8-10cm deep in spring, in fertile, humus-rich, moist but well-drained and preferably sandy soil in full sun or partial shade; if clumps become congested, divide them in early spring. May be a nuisance in some gardens if not managed well
No pruning required, except the removal of dead leaves and flower stems before new growth starts in spring