How to prune zantedeschia 'black star'

Deadhead as flowers fade; cut back fully when foliage yellows in late summer or autumn. Cut spent flower stems to the base. Once all foliage has yellowed and died, cut back to soil level with clean pruners. In cold climates, lift and store rhizomes frost-free over winter.

Deadhead throughout bloom period; full cut-back once annually. Zantedeschia 'Black Star' is a dark-spathed calla lily cultivar that benefits from prompt deadheading of spent flowers to prolong the display. Remove faded spathes at the stem base. After the growing season, when foliage naturally yellows, cut everything back to ground level and rest the rhizome until spring.

Cut spent flower stems to the base. Once all foliage has yellowed and died, cut back to soil level with clean pruners. In cold climates, lift and store rhizomes frost-free over winter.