Overwintering guide
How to overwinter zantedeschia 'edge of night'
Winter watering
Water rarely, and only in dry spells — winter wet is a bigger risk than winter cold. Make sure containers drain freely.
The mistake that kills zantedeschia 'edge of night' in winter
Leaving zantedeschia 'edge of night' in a pot standing in a saucer of water. Waterlogged compost freezes solid around the roots and kills plants that would have survived the cold perfectly well.
More zantedeschia 'edge of night' care
Overwintering zantedeschia 'edge of night' — FAQ
Does zantedeschia 'edge of night' need to come indoors for winter?
Zantedeschia 'Edge of Night' is hardy to roughly USDA zone 8 — winter lows around -12°C. That means it survives outside in mild areas, but wants shelter in a hard winter. Zantedeschia 'Edge of Night' can stay outside over winter in most areas, but appreciates some protection in a cold snap. Mulch generously over the root zone, move containers against a sheltered wall (pots freeze far harder than open ground), and have horticultural fleece ready for the worst nights. The roots are what you are protecting — top growth can be sacrificed and regrown.
When should I move zantedeschia 'edge of night' for winter?
Mulch and move pots into shelter in late autumn, before the first hard frosts.
How often should I water zantedeschia 'edge of night' in winter?
Water rarely, and only in dry spells — winter wet is a bigger risk than winter cold. Make sure containers drain freely.
What kills zantedeschia 'edge of night' over winter?
Leaving zantedeschia 'edge of night' in a pot standing in a saucer of water. Waterlogged compost freezes solid around the roots and kills plants that would have survived the cold perfectly well.