I have had this CIDP for 3 years now in a 45 gallon nursery pot. I goes into my unheated garage every winter and sees temps well below freezing with no damage. If I lived in a full zone warmer (8b), I would definitely be planting this baby out in the yard and think it would do fairly well... Some protection is the harshest winters, but not very often. Where you live should be great.
I need to find someone to take it off my hands and plant it outside!!!
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Canary Island Date Palm Tree - Phoenix Canariensis