Can pony palms live outside
I live in New River, Arizona. I purchased a house and inherited 3 large pony palms, each over 8 ft. tall. They are in big pots outside and we move them under our patio for the cold months (Dec-Mar). In the summer months (April-November), they sit in their large pots in direct sunlight. Will they survive the colder months (temps anywhere from 45-25) if I plant them in the ground? Pretty soon I won't be able to find a pot big enough or be able to move them by dolly....Any suggestions?
Where I live in Florida, on the coast in the Tampa Bay area, there are ponytails that I know personally have been living outside for over 25 years. In that time, the temperature has fallen to the upper 20's a couple of times, and maybe a dozen times to freezing. We are considered to be in zone 9b. You can find your zone at this site, if your curious: https://www.gardeningknowhow.com/planting-zones/
Your ponytails should do fine outdoors - have you ever seen any growing in yards as you drive around? You might want to use some kind of winter protection if sub-freezing temperatures are forecast. https://www.gardeningknowhow.com/plant-problems/environmental/protecting-plants-winter.htm