Overwintering guide
How to overwinter castilian heron's bill
Winter watering
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
The mistake that kills castilian heron's bill in winter
Cutting castilian heron's bill 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 castilian heron's bill care
Overwintering castilian heron's bill — FAQ
Does castilian heron's bill need to come indoors for winter?
Castilian Heron's Bill is hardy to roughly USDA zone 5 — winter lows around -29°C. That means it can stay outside all winter in most temperate gardens. Castilian Heron's Bill 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 castilian heron's bill for winter?
Tidy and mulch in late autumn; leave the plant undisturbed until spring.
How often should I water castilian heron's bill in winter?
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
What kills castilian heron's bill over winter?
Cutting castilian heron's bill 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.