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