Mainly for zone 7b(8a), lately the weather has been good this year not falling below 20F at the moment. Lowest this year so far was 26F though the weather is very bipolar though.
First time hearing about this citrumelo. Apparently it survived 2F in Athens, TN in 2003. Anyone know a source of where to get this? If anyone has it I could trade some albizia coreana seeds..