Overwintering guide
How to overwinter mizuna 'red kingdom'
Winter watering
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
The mistake that kills mizuna 'red kingdom' in winter
Cutting mizuna 'red kingdom' hard back in autumn "to tidy up". That removes the growth that shelters the crown, and on some plants removes next season's flower buds entirely.
More mizuna 'red kingdom' care
Overwintering mizuna 'red kingdom' — FAQ
Does mizuna 'red kingdom' need to come indoors for winter?
Mizuna 'Red Kingdom' is hardy to roughly USDA zone 2 — winter lows around -46°C. That means it can stay outside all winter in most temperate gardens. Mizuna 'Red Kingdom' is properly hardy and overwinters outside without fuss. Tidy away anything dead or diseased, apply a mulch over the crown to steady soil temperatures, and otherwise leave it alone — many hardy plants actually need a cold period to flower and grow well the following year. Save hard pruning for the right season rather than doing it in autumn.
When should I move mizuna 'red kingdom' for winter?
Tidy and mulch in late autumn; leave the plant undisturbed until spring.
How often should I water mizuna 'red kingdom' in winter?
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
What kills mizuna 'red kingdom' over winter?
Cutting mizuna 'red kingdom' hard back in autumn "to tidy up". That removes the growth that shelters the crown, and on some plants removes next season's flower buds entirely.