Overwintering guide
How to overwinter aster 'little carlow'
Winter watering
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
The mistake that kills aster 'little carlow' in winter
Cutting aster 'little carlow' 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 aster 'little carlow' care
Overwintering aster 'little carlow' — FAQ
Does aster 'little carlow' need to come indoors for winter?
Aster 'Little Carlow' is hardy to roughly USDA zone 4 — winter lows around -34°C. That means it can stay outside all winter in most temperate gardens. Aster 'Little Carlow' 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 aster 'little carlow' for winter?
Tidy and mulch in late autumn; leave the plant undisturbed until spring.
How often should I water aster 'little carlow' in winter?
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
What kills aster 'little carlow' over winter?
Cutting aster 'little carlow' 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.