Hardiness zone guide
1
USDA Hardiness Zone 1
< -45.6 °C· < -50 °F· Average annual minimum
Arctic
Zone 1 is the planet's harshest growing climate, with winter lows below −51 °C across the high Arctic and interior Alaska. Only the toughest native shrubs, mosses and a handful of ultra-hardy berries survive here, almost always with snow cover or a greenhouse.
What to grow in Zone 1
We're still adding plants suited to this zone.