Overwintering guide
How to overwinter delphinium 'galahad'
Winter watering
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
The mistake that kills delphinium 'galahad' in winter
Cutting delphinium 'galahad' 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 delphinium 'galahad' care
- Overwintering candle larkspur — the species this cultivar belongs to
- Full delphinium 'galahad' care guide
- Delphinium 'Galahad' temperature range
- How often to water delphinium 'galahad'
- How to prune delphinium 'galahad'
- Common delphinium 'galahad' problems & fixes
- Best plant identifier apps — tested and ranked
Overwintering delphinium 'galahad' — FAQ
Does delphinium 'galahad' need to come indoors for winter?
Delphinium 'Galahad' is hardy to roughly USDA zone 3 — winter lows around -40°C. That means it can stay outside all winter in most temperate gardens. Delphinium 'Galahad' 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 delphinium 'galahad' for winter?
Tidy and mulch in late autumn; leave the plant undisturbed until spring.
How often should I water delphinium 'galahad' in winter?
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
What kills delphinium 'galahad' over winter?
Cutting delphinium 'galahad' 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.