I did a lot of gardening in Alaska, root things were always the best choice, if you could get your tomatoes through the spring frosts, with all that sun light you had some great tomatoes.
The biggest draw back to gardening there was the moose, thy could wipe out an entire garden in a couple of hours. I used to keep my long bow right next to the back door, with some of the big rubber blunts, they worked pretty well. This one old cow had a calf and if you could get the calf to run mom would go after him. I had about a 1/4 acre garden, and one fine moon light night the cow and her child came in and just wiped out the garden.
We had gotten most of our crop harvested and that was back, when for my off time I helped a friend of mine on his farm, we had 600 acres of potatoes and did up another 600 acres of hay.