Overwintering guide
How to overwinter white guinea yam
Winter watering
Cut watering right back — white guinea yam 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 white guinea yam in winter
Watering on the same schedule as summer. In winter that keeps the roots sodden while the plant is barely drinking, and white guinea yam rots from the base.
More white guinea yam care
Overwintering white guinea yam — FAQ
Does white guinea yam need to come indoors for winter?
White Guinea Yam is hardy to roughly USDA zone 10 — winter lows around -1°C. That means it will not survive frost and needs to come inside. White Guinea Yam 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 white guinea yam for winter?
Bring indoors when nights start dropping below about 10°C, ahead of the first frost.
How often should I water white guinea yam in winter?
Cut watering right back — white guinea yam uses far less while growth slows, and cold, wet compost is the usual cause of winter root rot. Stop feeding until spring.
What kills white guinea yam over winter?
Watering on the same schedule as summer. In winter that keeps the roots sodden while the plant is barely drinking, and white guinea yam rots from the base.