Freezing bulbs: Duration vs. low temperature
Paul Licht (Wed, 16 Jan 2013 13:00:40 PST)

Nathan
I have several Alstomeria in my home garden in the hills of
El Cerrito, and of course, we have huge patches at UCBG
where it got down to 24F; it has been colder in the past.
No damage to any that I can tell.

Paul

Paul Licht, Director
University of California Botanical Garden
200 Centennial Drive
Berkeley, CA 94720
(510)-643-8999
http://botanicalgarden.berkeley.edu/