Blackberry lily, known botanically as belamcanda chinensis and also commonly as leopard lily, is a flowering perennial member of the iris family. Grown from an underground rhizome, the plant blooms in the spring and summer producing spotted six-petal flowers atop 18-inch long arching stems over slim green foliage. It is hardy in USDA zones 4 through 10 and can remain green year round in USDA Zone 8 and above. The flowers, rhizomes and seed heads can each be harvested.
Harvest blackberry lily flowers for use in cut flower arrangements at their peak just as the bloom is approaching the point where it is completely unfurled. Cut the long stem down at the crown of the plant with clean, sharp secateurs and place into a vase of water immediately.
Harvest the underground rhizomes for division in the spring or fall. Use a trowel to gently unearth the rhizome and break or cut the rhizome into pieces that have at least two eyes each. Replant immediately in the soil with the eyes positioned up, at the previous planting depth, and water in well.
Harvest the blackberry lily seed heads in the fall once they have begun to burst open and reveal the dark blackberry-like inner clusters. The seeds can be separated and washed from the fruit casing and stored or simply sowed into the soil while encased in the fruit.