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How long does the growing season last in Arctic tundra regions?
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Tundra
Alaskan mountain and tundra vegetation in the fall.
In Arctic tundra regions, the growing season is typically brief, generally lasting less than 100 days. In some specific areas, such as across northern Canada, the growing season is even shorter, ranging from 45 to 60 days.12
Because plant growth and many animal activities are confined to the two to four months of the year when temperatures remain above freezing, tundra organisms have evolved to complete their life cycles rapidly. During this short window, the long daylight hours of the Arctic summer allow plants to optimize [photosynthesis]. Despite this, the environment remains harsh, and frost can occur at any time of the year.3124