How to Propagate Turk's cap lily?
Propagate by seed, sown, when ripe, in containers in a cold frame or separate offsets after the foliage dies down

Turk's cap lily · Lilium superbum
Also known as: great American Turk's cap lily; swamp lily; Turk's head lily
Grow in neutral to acid well-drained soil enriched with leaf mould or well-rotted organic matter
Propagate by seed, sown, when ripe, in containers in a cold frame or separate offsets after the foliage dies down