Overwintering guide
How to overwinter heart-leaved pinellia
Winter watering
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
The mistake that kills heart-leaved pinellia in winter
Cutting heart-leaved pinellia 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 heart-leaved pinellia care
Overwintering heart-leaved pinellia — FAQ
Does heart-leaved pinellia need to come indoors for winter?
Heart-leaved Pinellia is hardy to roughly USDA zone 7 — winter lows around -18°C. That means it can stay outside all winter in most temperate gardens. Heart-leaved Pinellia 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 heart-leaved pinellia for winter?
Tidy and mulch in late autumn; leave the plant undisturbed until spring.
How often should I water heart-leaved pinellia in winter?
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
What kills heart-leaved pinellia over winter?
Cutting heart-leaved pinellia 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.