This apply to USDA Climate Zone 1a and zone 1b. In these zones the minimum temperatures are -60 to -55 degrees F (-51.1 to -48.3 degrees C) and -55 to -50 degrees F (-48.3 to -45.6 degrees C) respectively. The plants that grow in this harsh tundra environment must be characterized by extreme cold hardiness and drought tolerance. For notice, the plants mentioned below will probably grow in zone 2a and zone 2b and vice versa i.e. the zone 2 plants might grow in zone 1 because of the stress tolerance characteristics both have. Moreover, few countries has an additional zone 0a and zone 0b like Canada. Although in these zones its tough to be a gardener, however, zone 1 plants might grow under certain modified conditions.
What plants are Cold Hardy to USDA Zone 1? What Plants Can Grow in Zone 1?
Fruit Trees that grow in zone 1:
Chokecherry
Crowberry
Fort Mac Mac Apple
Haskap
September Ruby Apple
Vegetables that grow in zone 1:
Beans
Broccoli
Cabbage
Kale
Lettuce
Potatoes
Radish
Spinach
Sweet Peas
Sweet pepper
Tomatoes
Arrowhead
Artemisia schmidtiana - Silver Mound
Cranesbill Geranium
Siberian Iris
Yarrow
Herbs that grow in zone 1:
Basil
Chives
Devil’s club
French Lavender
Mint
Oregano
Rosemary
Self Heal Herb (Prunella vulgaris)
Thyme