Overwintering guide
How to overwinter hosta 'empress wu'
Winter watering
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
The mistake that kills hosta 'empress wu' in winter
Cutting hosta 'empress wu' 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 hosta 'empress wu' care
Overwintering hosta 'empress wu' — FAQ
Does hosta 'empress wu' need to come indoors for winter?
Hosta 'Empress Wu' is hardy to roughly USDA zone 3 — winter lows around -40°C. That means it can stay outside all winter in most temperate gardens. Hosta 'Empress Wu' 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 hosta 'empress wu' for winter?
Tidy and mulch in late autumn; leave the plant undisturbed until spring.
How often should I water hosta 'empress wu' in winter?
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
What kills hosta 'empress wu' over winter?
Cutting hosta 'empress wu' 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.