It depends on what you're growing. Here, the vegetables that rely on hot weather have a fairly short growing season but veggies like brussels sprouts, kale, spinach, cabbage, cauliflower and broccoli do pretty well.
I've had a garden in past years, but have let it go for the past couple (lack of time and just didn't feel up to gardening), but this summer I plan to plant broccoli, cauliflower, cabbage, green beans, tomatoes, kale, spinach and several types of lettuce.
This time of year, fresh produce tends to get quite expensive up here due to the shipping costs involved. I just spent $3.00 on a dinky heady of cauliflower for the casserole I'm making for dinner tonight. I would have used frozen, but it doesn't work well in this recipe. Guess I was just disgusted at having to pay 3 bucks for something that was maybe half the size of what I can grow in my garden in a good year.