USDA HARDINESS ZONES
Not every plant is frost hardy. The tabel gives you an indication about the minimum temperatures a plant can survive

WINTERHARDHEID
Niet alle planten zijn winterhard. Onderstaande tabel geeft aan welke minimum temperatuur een plant overleeft.

 

Zone 1 :  Below -46°C        (-50°F)
Zone 2 : -46°C to -40°C      (-50°F to -40°F)
Zone 3 : -40°C to -34°C      (-40°F to -30°F)
Zone 4 : -34°C to -29°C      (-30°F to -20°F)
Zone 5 : -29°C to -23°C      (-20°F to -10°F)
Zone 6 : -23°C to -18°C      (-10°F to 0°F)
Zone 7 : -18°C to -12°C      (0°F to +10°F)
Zone 8 : -12°C to -7°C        (+10°F to +20°F)
Zone 9 : -7°C to -1°C          (+20°F to +30°F)
Zone 10 : -1°C to +4°C       (+30°F to +40°F)
Zone 11 :  Above +4°C       (+40°F)