Overwintering guide
How to overwinter poker alumroot
Winter watering
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
The mistake that kills poker alumroot in winter
Cutting poker alumroot 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 poker alumroot care
Overwintering poker alumroot — FAQ
Does poker alumroot need to come indoors for winter?
Poker alumroot is hardy to roughly USDA zone 3 — winter lows around -40°C. That means it can stay outside all winter in most temperate gardens. Poker alumroot 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 poker alumroot for winter?
Tidy and mulch in late autumn; leave the plant undisturbed until spring.
How often should I water poker alumroot in winter?
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
What kills poker alumroot over winter?
Cutting poker alumroot 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.