9b Zone Palm Hardiness Data
Special thanks to member John Case. John pushes the envelope with palms just about as far as possible in Inland Northern California.
In John's words:
"This is a list of palms that a person might consider when living in Eastern Contra Costa County in Northern California. It is a 9b zone with cold dry winters, rainy season from late October to March, and hot dry summers with extended periods of over 100 degrees."