Overwintering guide
How to overwinter fanal astilbe
Winter watering
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
The mistake that kills fanal astilbe in winter
Cutting fanal astilbe 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 fanal astilbe care
Overwintering fanal astilbe — FAQ
Does fanal astilbe need to come indoors for winter?
Fanal astilbe is hardy to roughly USDA zone 4 — winter lows around -34°C. That means it can stay outside all winter in most temperate gardens. Fanal astilbe 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 fanal astilbe for winter?
Tidy and mulch in late autumn; leave the plant undisturbed until spring.
How often should I water fanal astilbe in winter?
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
What kills fanal astilbe over winter?
Cutting fanal astilbe 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.