How to prune martagon lily

Deadhead after flowering in midsummer; cut spent stems to ground when yellowed. Cut or snap the flower spike at the base once blooms are spent. Allow the stem and leaves to yellow naturally before removing. Divide overcrowded clumps in autumn only when flowering noticeably declines.

Annually after flowering; divide only every several years if congested. Martagon Lily is an undemanding woodland species. Deadhead spent flower spikes to prevent seeding (though self-seeding colonies are sometimes desirable — a personal choice). Cut stems to the ground once they yellow after summer. Martagon lilies dislike disturbance; avoid digging unless dividing an overcrowded clump, which is rarely necessary.

Cut or snap the flower spike at the base once blooms are spent. Allow the stem and leaves to yellow naturally before removing. Divide overcrowded clumps in autumn only when flowering noticeably declines.