In the Anchorage area, the growing season is about 120 days long. The first frost-free date can vary widely, from the end of April until the end of May; and the first autumn frost may occur anytime between the end of August and the middle of September.
A “typical” growing season is mid-May through mid-September. Changes in elevation of 500 feet in the Anchorage bowl can shorten the growing season by one week on each end.
Ah, but thrive they do and so visiting Alaska’s Botanical Gardens in Anchorage is a must to see to gaze upon all the different species of plants that grown in their climate.