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