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Despite the harsh climate, over 400 species of vascular plants grow in Nunavut. These hardy species have developed remarkable survival strategies to thrive in one of Earth's most challenging environments.
Data Sources: Species information from Canadian Museum of Nature Arctic Flora, Kew Plants of the World Online, and Panarctic Flora Database
Salix arctica
One of the northernmost woody plants on Earth, the Arctic willow grows only a few centimeters tall, spreading along the ground to avoid harsh winds. Despite its small stature, it is technically a tree—the smallest in the world.
Prostrate growth form, hairy leaves for insulation, extensive root system
Traditional medicine (bark contains salicin), food source for caribou and muskoxen
Circumpolar Arctic, throughout Nunavut
Saxifraga oppositifolia
Nunavut's territorial flower, the purple saxifrage is one of the first plants to bloom in spring—often emerging through snow. Its cushion-like growth form helps it retain heat and survive extreme cold.
Cushion growth form, dark pigmentation absorbs heat, flowers track the sun
Traditional food source (leaves and flowers edible), territorial symbol of Nunavut
Circumpolar, one of the northernmost flowering plants
Eriophorum spp.
Not actually a grass but a sedge, cotton grass is recognized by its distinctive white, cotton-like seed heads that dot the summer tundra. These fluffy seed heads help disperse seeds in Arctic winds.
Rhizomatous growth in wet areas, fluffy seeds for wind dispersal
Traditional wicks for qulliq (oil lamps), wound dressing, insulation
Wetlands and lake margins throughout Nunavut
Papaver radicatum
The Arctic poppy's bowl-shaped yellow flowers are heliotropic—they follow the sun across the sky to maximize heat absorption. The flower's parabolic shape focuses sunlight onto the reproductive parts.
Heliotropic flowers, parabolic petal shape concentrates heat, hairy stems
Ornamental value, indicator species for calcium-rich soils
Rocky slopes and gravelly areas across the Arctic
Cladonia rangiferina
Also called caribou moss, this lichen forms a critical winter food source for caribou. Lichens are actually symbiotic organisms—a fungus living with algae or cyanobacteria. They can survive complete desiccation and extreme cold.
Can survive -50°C, tolerates complete drying, grows on bare rock
Critical caribou forage (up to 90% of winter diet), traditional dye, emergency human food
Extensive across tundra and boreal regions
Rhododendron groenlandicum
An aromatic evergreen shrub with leathery leaves that have distinctive rolled edges and fuzzy undersides. It has been used for centuries by Indigenous peoples to make a traditional tea.
Evergreen leaves avoid regrowth energy cost, rolled leaf edges reduce water loss, aromatic compounds deter herbivores
Traditional beverage, medicinal uses (colds, respiratory issues), insect repellent
Wetlands and forests across subarctic and southern Arctic
Arctic plants have developed remarkable adaptations to survive extreme conditions including temperatures below -50°C, permafrost, drought (despite surrounded by ice), and intense UV radiation.
Growing close to the ground protects plants from wind and takes advantage of warmer ground-level temperatures. Many Arctic plants are only a few centimeters tall.
Dark-colored leaves and flowers absorb more solar radiation, helping plants photosynthesize in cold conditions.
Fine hairs on leaves and stems trap air for insulation and reduce water loss from wind exposure.
Arctic plants complete their entire reproductive cycle in the brief 6-8 week summer, from flowering to seed dispersal.
Many Arctic plants keep their leaves year-round, avoiding the energy cost of growing new leaves each spring.
Compact, dome-shaped growth creates warmer microclimates within the plant and reduces wind exposure.