Overwintering guide
How to overwinter cup-shaped wittrockia
Winter watering
Cut watering right back — cup-shaped wittrockia uses far less while growth slows, and cold, wet compost is the usual cause of winter root rot. Stop feeding until spring.
The mistake that kills cup-shaped wittrockia in winter
Watering on the same schedule as summer. In winter that keeps the roots sodden while the plant is barely drinking, and cup-shaped wittrockia rots from the base.
More cup-shaped wittrockia care
Overwintering cup-shaped wittrockia — FAQ
Does cup-shaped wittrockia need to come indoors for winter?
Cup-Shaped Wittrockia is hardy to roughly USDA zone 10 — winter lows around -1°C. That means it will not survive frost and needs to come inside. Cup-Shaped Wittrockia is frost-tender, so overwintering means bringing it inside and letting it rest rather than pushing it to grow. Move it indoors well before the first frost, give it the brightest spot you have (light levels indoors drop sharply in winter), and keep it away from both cold window glass and hot radiators — the swing between the two does more damage than the cold itself.
When should I move cup-shaped wittrockia for winter?
Bring indoors when nights start dropping below about 10°C, ahead of the first frost.
How often should I water cup-shaped wittrockia in winter?
Cut watering right back — cup-shaped wittrockia uses far less while growth slows, and cold, wet compost is the usual cause of winter root rot. Stop feeding until spring.
What kills cup-shaped wittrockia over winter?
Watering on the same schedule as summer. In winter that keeps the roots sodden while the plant is barely drinking, and cup-shaped wittrockia rots from the base.