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Overwintering guide

How to overwinter yellow prairie wild indigo

Verdict
Stays outside
When
Tidy and mulch in late autumn; leave the plant undisturbed until spring.
Hardiness
Yellow Prairie Wild Indigo is hardy to roughly USDA zone 5 — winter lows around -29°C. That means it can stay outside all winter in most temperate gardens.

Winter watering

No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.

The mistake that kills yellow prairie wild indigo in winter

Cutting yellow prairie wild indigo 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 yellow prairie wild indigo care

Overwintering yellow prairie wild indigo — FAQ

Does yellow prairie wild indigo need to come indoors for winter?

Yellow Prairie Wild Indigo is hardy to roughly USDA zone 5 — winter lows around -29°C. That means it can stay outside all winter in most temperate gardens. Yellow Prairie Wild Indigo 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 yellow prairie wild indigo for winter?

Tidy and mulch in late autumn; leave the plant undisturbed until spring.

How often should I water yellow prairie wild indigo in winter?

No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.

What kills yellow prairie wild indigo over winter?

Cutting yellow prairie wild indigo 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.