Overwintering guide
How to overwinter illumination periwinkle
Winter watering
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
The mistake that kills illumination periwinkle in winter
Cutting illumination periwinkle 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 illumination periwinkle care
- Overwintering lesser periwinkle — the species this cultivar belongs to
- Full illumination periwinkle care guide
- Illumination Periwinkle temperature range
- How often to water illumination periwinkle
- How to prune illumination periwinkle
- Common illumination periwinkle problems & fixes
- Best plant identifier apps — tested and ranked
Overwintering illumination periwinkle — FAQ
Does illumination periwinkle need to come indoors for winter?
Illumination Periwinkle is hardy to roughly USDA zone 4 — winter lows around -34°C. That means it can stay outside all winter in most temperate gardens. Illumination Periwinkle 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 illumination periwinkle for winter?
Tidy and mulch in late autumn; leave the plant undisturbed until spring.
How often should I water illumination periwinkle in winter?
No winter watering needed in open ground. Containers only need water in long dry, frost-free spells.
What kills illumination periwinkle over winter?
Cutting illumination periwinkle 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.