CANADA: Fresh Greens at -36°C: A Container Farm in the High Arctic
In Alert, Nunavut — the northernmost continuously inhabited place on Earth, just 817 km from the North Pole — winter brings 24-hour darkness and temperatures below -30°C. Fresh food is typically flown in, but flights are often delayed for weeks, leaving residents without produce.
To reduce this dependency, Molly Farquhar launched The C.A.N. (Continuous Alert Nourishment) — a hydroponic vertical farm built inside a renovated shipping container.
© Molly Farquhar
From Scrap Container to Arctic Grow Room
What began as a small proof of concept inside a warehouse evolved into a fully insulated, powered grow unit. The refurbished container includes heaters, a two-room entry system to prevent cold shock, LED-lit shelving with PVC hydroponic channels, air exchange controls, and a simple water storage system.
Despite the extreme Arctic conditions, crops such as lettuce, kale, basil, spinach, and arugula now grow reliably inside. The first harvest — a full crate of lettuce delivered to the station kitchen — marked a major milestone.
Overcoming Early Challenges
The project faced setbacks. Plants initially suffered from slow growth, root slime, and nutrient issues. After months of troubleshooting — adjusting water sources, filtration, airflow, pH control, sterilization, and cooling — the real problem was identified: insufficient oxygen in the root systems.
By adding air stones and timed water pumps to improve dissolved oxygen levels, plant health significantly improved within weeks.
Building Arctic Food Resilience
With lettuce production stabilized, Farquhar plans to expand into cucumbers, tomatoes, peppers, beans, and more. While modest in size, the farm demonstrates how controlled-environment agriculture can increase food security in remote northern communities where air freight disruptions are common.
Her goal is simple: to grow fresh produce year-round and help make Alert more self-sufficient and sustainable
Environment and Climate Change Canada
Molly Farquhar
mofar1566@outlook.com
www.canada.ca/en/environment-climate-change
All photos: © Molly Farquhar