Overwintering guide
How to overwinter herald's trumpet
Winter watering
Water only occasionally — enough that the rootball never dries out completely, no more. No feeding until spring growth begins.
The mistake that kills herald's trumpet in winter
Bringing herald's trumpet into a warm living room. Too much winter warmth forces weak, pale growth that collapses when it goes back outside — cool and bright beats warm and dim.
More herald's trumpet care
Overwintering herald's trumpet — FAQ
Does herald's trumpet need to come indoors for winter?
Herald's Trumpet is hardy to roughly USDA zone 9 — winter lows around -7°C. That means it takes cool conditions but not a real freeze. Herald's Trumpet will take cool conditions but not a hard freeze, so the aim is a frost-free winter rather than a warm one. An unheated greenhouse, porch, conservatory or bright garage all work well. Keep it cool, bright and on the dry side, and it will hold steady until growth restarts in spring.
When should I move herald's trumpet for winter?
Move under cover before the first hard frost; back outside after the last spring frost.
How often should I water herald's trumpet in winter?
Water only occasionally — enough that the rootball never dries out completely, no more. No feeding until spring growth begins.
What kills herald's trumpet over winter?
Bringing herald's trumpet into a warm living room. Too much winter warmth forces weak, pale growth that collapses when it goes back outside — cool and bright beats warm and dim.