Arabidopsis arenosa subsp. arenosa
Arctic Rockcress (Arabidopsis arenosa subsp. arenosa) is a hardy, low-growing subarctic and boreal plant. It is commonly found in the Arctic, the Arctic tundra and Arctic fells. Its succulent leaves, in a distinctive arrowhead-shape, grow to a height of up to 16 inches. Its beautiful four-petaled, white flowers, have been described as “fairy lamps”, and its distinctive three-parted seed capsule often contains hundreds of black seeds. It is drought and salt-tolerant and can adapt to a wide range of conditions, from wet, nutrient-rich meadows to dry, infertile areas. Arctic Rockcress is a valuable resource for pollinators in the Arctic, providing much needed nectar and pollen for bees and other insects.
Sunlight
Partial Shade
Water Needs
medium
Water Every
7-10 days
Sun Needs
partial-shade
Growth
Low
Care Level
Low
Start seeds indoors 6-8 weeks before last frost date
Take 4-6" cuttings in spring, root in water or moist soil
Divide root ball in spring, replant sections immediately
Bend stem to soil surface, cover lightly, roots form in 4-6 weeks
Good For:
Consider Carefully:
Enjoys dappled or limited direct sun—about 2–4 hours of morning or late afternoon light and protection during peak midday sun.
Keep soil consistently moist but not waterlogged. Water when top inch of soil is dry.