Some varieties of very hardy palms can be had in the warmest zones of Idaho. Idaho has a mainland atmosphere with sweltering summers and cold winters. The normal temperature in Boise city in January is 29°F (– 2°C) and 74°F (23°C) in July. The moistness levels are commonly low over the state.
Idaho USDA zones territory from 2b to 7a. The most astounding temperature at any point recorded was 118 °F (48 °C) and the least was −60 °F (−51 °C). In the winter by and large it gets around 20 in (51 cm).
Palm Trees in Idaho
Only the hardiest of palms have a chance of survival in Idaho. Building protection and making a microclimate can significantly increase the chance of survival, and allow you to experiment with other palm types.
Needle Palm Tree – Zones 5b-11 (- 15 to - 10F)
European Fan Palm Tree – Zones 7b-11 (5 to 10 F)
Pindo Palm Tree – Zones 7b-11 (5 to 10 F)
Sago Palm Tree – Zones 7b-11 (5 to 10 F)
Saw Palmetto Palm Tree – Zones 7a-11 (0 to 5 F)
Windmill Palm Tree – Zones 7b-11 (5 to 10 F)