Overwintering guide
How to overwinter eichhornia crassipes
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 eichhornia crassipes in winter
Bringing eichhornia crassipes 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 eichhornia crassipes care
Overwintering eichhornia crassipes — FAQ
Does eichhornia crassipes need to come indoors for winter?
Eichhornia crassipes is hardy to roughly USDA zone 9 — winter lows around -7°C. That means it takes cool conditions but not a real freeze. Eichhornia crassipes 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 eichhornia crassipes for winter?
Move under cover before the first hard frost; back outside after the last spring frost.
How often should I water eichhornia crassipes in winter?
Water only occasionally — enough that the rootball never dries out completely, no more. No feeding until spring growth begins.
What kills eichhornia crassipes over winter?
Bringing eichhornia crassipes 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.