Overwintering guide
How to overwinter salvia 'may night'
Winter watering
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
The mistake that kills salvia 'may night' in winter
Cutting salvia 'may night' 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 salvia 'may night' care
Overwintering salvia 'may night' — FAQ
Does salvia 'may night' need to come indoors for winter?
Salvia 'May Night' is hardy to roughly USDA zone 4 — winter lows around -34°C. That means it can stay outside all winter in most temperate gardens. Salvia 'May Night' 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 salvia 'may night' for winter?
Tidy and mulch in late autumn; leave the plant undisturbed until spring.
How often should I water salvia 'may night' in winter?
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
What kills salvia 'may night' over winter?
Cutting salvia 'may night' 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.