Definitions

Frost Tolerance

goldenpalm.hu
goldenpalm.hu
26/10/2021 09:26

Frost Tolerance

The ability of a plant to survive freezing temperatures depends on many factors. The temperatures indicated here may be sustained by mature, established plants as an occasional, brief event. Many other factors need to be considered though, such as duration of the freeze, sunshine, daytime temperatures, general climate, rainfall and humidity. Also, mature plants are considerably hardier than seedlings and there are differences in hardiness between individual plants.

 

None
down to +2°C, 36°F, corresponds to USDA Zone 11.

Light
down to -3°C, 27°F, corresponds to USDA Zone 10b to 10a.

Moderate
down to-8°C, 18°F, corresponds to USDA Zone 10a to 9b.

Severe
down to-13°C, 9°F, corresponds to USDA Zone 9 to 8b.

Excessive
down to-18°C, 0°F, corresponds to USDA Zone 8 to 7b.

Extreme
down to at least -23°C, -9°F, corresponds to USDA Zone 7a or lower.