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