How to prune zantedeschia 'schwarzwalder'

Deadhead as blooms fade; full cut-back when foliage yellows, typically late summer to autumn. Cut faded flower stems cleanly at the base. At season's end, remove all yellowed foliage to ground level. In frost-prone climates, dig and store rhizomes in a cool, dry, frost-free spot.

Deadhead as needed; annual full cut-back. Zantedeschia 'Schwarzwalder' (a deep burgundy-black spathe cultivar) responds well to deadheading to keep the plant flowering as long as possible. Cut spent flowers at the stem base. When the season ends and leaves yellow naturally, cut the whole plant down to soil level and rest the rhizome through winter.

Cut faded flower stems cleanly at the base. At season's end, remove all yellowed foliage to ground level. In frost-prone climates, dig and store rhizomes in a cool, dry, frost-free spot.