"Canary" wrote in message
oups.com...
I heard that the purple-leaved oxalis would die in the winter, and
would revive next spring from its tuber. However, I have an access to a
green house in my institute. So ,I hope I can move my lovely oxalis
into green house as the winter comes. But when ? Or rather , under how
many degree Celsius, should I remove it?
Thanks a lot!


You'll first need to find a chart which indicates the freezing temperature
of water in your location. Add 5 degrees because I don't think that plant
wants to cut it too close. Compare this number to temperature predictions on
the weather reports, and get the plant into the greenhouse.