Overwintering guide
How to overwinter green cotton lavender
Winter watering
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
The mistake that kills green cotton lavender in winter
Cutting green cotton lavender 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 green cotton lavender care
Overwintering green cotton lavender — FAQ
Does green cotton lavender need to come indoors for winter?
Green Cotton Lavender is hardy to roughly USDA zone 6 — winter lows around -23°C. That means it can stay outside all winter in most temperate gardens. Green Cotton Lavender 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 green cotton lavender for winter?
Tidy and mulch in late autumn; leave the plant undisturbed until spring.
How often should I water green cotton lavender in winter?
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
What kills green cotton lavender over winter?
Cutting green cotton lavender 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.