[throwup238]

It works during the summer for annual plants and hardy species that can withstand the winter but the number of frost days really limits what you can grow. They take a few extra years to fruit but trees like avocados really change the ratio of effort to edible produce but they’re sensitive to frost. In California the double growing season takes it up another level, at the expense of growing a small number of frost loving species like blueberries.

That said I had a very productive dacha north of Moscow so there’s plenty of stuff you can grow in colder climates, you just have to more creative with your choices.