Overwintering guide
How to overwinter nikko blue bigleaf hydrangea
Winter watering
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
The mistake that kills nikko blue bigleaf hydrangea in winter
Cutting nikko blue bigleaf hydrangea 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 nikko blue bigleaf hydrangea care
- Overwintering hydrangea — the species this cultivar belongs to
- Full nikko blue bigleaf hydrangea care guide
- Nikko Blue Bigleaf Hydrangea temperature range
- How often to water nikko blue bigleaf hydrangea
- How to prune nikko blue bigleaf hydrangea
- Common nikko blue bigleaf hydrangea problems & fixes
- Best plant identifier apps — tested and ranked
Overwintering nikko blue bigleaf hydrangea — FAQ
Does nikko blue bigleaf hydrangea need to come indoors for winter?
Nikko Blue Bigleaf Hydrangea is hardy to roughly USDA zone 5 — winter lows around -29°C. That means it can stay outside all winter in most temperate gardens. Nikko Blue Bigleaf Hydrangea 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 nikko blue bigleaf hydrangea for winter?
Tidy and mulch in late autumn; leave the plant undisturbed until spring.
How often should I water nikko blue bigleaf hydrangea in winter?
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
What kills nikko blue bigleaf hydrangea over winter?
Cutting nikko blue bigleaf hydrangea 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.