Z. candida survives blazing Arizona summer sun (even up to 122 F / 50C) in a 1 gallon black plastic container, in any kind of soil, so long as it isn't dry for more than two weeks at a time. It goes dormant under such abuse but regrows leaves quickly after watering. If kept watered it is evergreen. It was not defoliated in the winter of 2012-2013 through 6 nights into the mid teens F / -7C. So, those of you with growing areas too hot and sunny for other things can consider putting this in that spot. Leo Martin Phoenix Arizona USA