Overwintering guide
How to overwinter tongue water trumpet
Winter watering
Cut watering right back — tongue water trumpet 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 tongue water trumpet in winter
Watering on the same schedule as summer. In winter that keeps the roots sodden while the plant is barely drinking, and tongue water trumpet rots from the base.
More tongue water trumpet care
Overwintering tongue water trumpet — FAQ
Does tongue water trumpet need to come indoors for winter?
Tongue Water Trumpet is hardy to roughly USDA zone 11 — winter lows around 4°C. That means it will not survive frost and needs to come inside. Tongue Water Trumpet 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 tongue water trumpet for winter?
Bring indoors when nights start dropping below about 10°C, ahead of the first frost.
How often should I water tongue water trumpet in winter?
Cut watering right back — tongue water trumpet uses far less while growth slows, and cold, wet compost is the usual cause of winter root rot. Stop feeding until spring.
What kills tongue water trumpet over winter?
Watering on the same schedule as summer. In winter that keeps the roots sodden while the plant is barely drinking, and tongue water trumpet rots from the base.