New Hampshire is unreasonably chilly for palm trees. New Hampshire encounters a moist mainland atmosphere with cold blanketed winters and warm sticky summers. The Southeastern piece of the state is impacted by Atlantic Ocean. The normal July temperature is 70°F (21°C). The normal January temperature is around 21°F (– 6°C). Every year the state gets somewhere in the range of 60-100 inches (150-(250 cm) of snow, and many Nor'easters.
The hottest temperature at any point recorded was 106°F (41°C) and the most minimal was – 46°F (– 43°C). New Hampshire gets sporadically affected by tropical storms in summer and blizzard like conditions during winter. New Hampshire USDA zones territory from 3a to 6a.
Palm Trees in New Hampshire
There are some palm trees that can endure cold all the way down to - 10F, however just for a brief time frame, and only once established for some time. In all actuality, the territory of New Hampshire is too cold to even think about growing palm trees. Your only chance is owning palms in pots and bringing them inside during the winter. Some incredible indoor/outdoor palms are:
Areca Palm Tree – Zones 9a – 11 (20 to 25 F)
Chinese Fan Palm Tree – Zones 8a – 11 (10 to 15 F)
Kentia Palm Tree – Zones 9b – 11 (25 to 30 F)
Lady Palm Tree – Zones 8b – 11 (15 to 20 F)