Here in Cape Town we're in the middle of winter and yet this little guy still grows.
Another outtake from Wikipedia:
"In the wilds of South Africa, large plants do survive the winter frosts by growing dense enough to provide their own natural cover. Drought-tolerant and fire-resistant, it will endure desert sun and heat once established, which the jade plant will not. Cuttings root very easily in most potting media."
And it's edible...