Overwintering guide
How to overwinter aster 'alma potschke'
Winter watering
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
The mistake that kills aster 'alma potschke' in winter
Cutting aster 'alma potschke' 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 'alma potschke' care
- Overwintering new england aster — the species this cultivar belongs to
- Full aster 'alma potschke' care guide
- Aster 'Alma Potschke' temperature range
- How often to water aster 'alma potschke'
- How to prune aster 'alma potschke'
- Common aster 'alma potschke' problems & fixes
- Best plant identifier apps — tested and ranked
Overwintering aster 'alma potschke' — FAQ
Does aster 'alma potschke' need to come indoors for winter?
Aster 'Alma Potschke' 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 'Alma Potschke' 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 'alma potschke' for winter?
Tidy and mulch in late autumn; leave the plant undisturbed until spring.
How often should I water aster 'alma potschke' in winter?
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
What kills aster 'alma potschke' over winter?
Cutting aster 'alma potschke' 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.