Overwintering guide
How to overwinter golden st. john's wort
Winter watering
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
The mistake that kills golden st. john's wort in winter
Cutting golden st. john's wort 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 golden st. john's wort care
Overwintering golden st. john's wort — FAQ
Does golden st. john's wort need to come indoors for winter?
Golden St. John's Wort is hardy to roughly USDA zone 5 — winter lows around -29°C. That means it can stay outside all winter in most temperate gardens. Golden St. John's Wort 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 golden st. john's wort for winter?
Tidy and mulch in late autumn; leave the plant undisturbed until spring.
How often should I water golden st. john's wort in winter?
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
What kills golden st. john's wort over winter?
Cutting golden st. john's wort 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.