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