Overwintering guide
How to overwinter 'castelfranco' radicchio
Winter watering
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
The mistake that kills 'castelfranco' radicchio in winter
Cutting 'castelfranco' radicchio 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 'castelfranco' radicchio care
- Overwintering chicory — the species this cultivar belongs to
- Full 'castelfranco' radicchio care guide
- 'Castelfranco' Radicchio temperature range
- How often to water 'castelfranco' radicchio
- How to prune 'castelfranco' radicchio
- Common 'castelfranco' radicchio problems & fixes
- Best plant identifier apps — tested and ranked
Overwintering 'castelfranco' radicchio — FAQ
Does 'castelfranco' radicchio need to come indoors for winter?
'Castelfranco' Radicchio is hardy to roughly USDA zone 4 — winter lows around -34°C. That means it can stay outside all winter in most temperate gardens. 'Castelfranco' Radicchio 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 'castelfranco' radicchio for winter?
Tidy and mulch in late autumn; leave the plant undisturbed until spring.
How often should I water 'castelfranco' radicchio in winter?
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
What kills 'castelfranco' radicchio over winter?
Cutting 'castelfranco' radicchio 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.