There is a lot of variation in what citrus can handle the cold. Dwarf Meyer lemon is perfect for the north. Bring inside when temps go below freezing otherwise it does great. I had lemons in Ohio. It's small enough to grow in a large container and move inside in the winter. I used grow lights in winter.
Some citrus need hot temperature though. Lemons do not like cold but Meyer lemon is only 3/4 lemon. Nobody knows exactly but thought to be 1/8 grapefruit which is very cold hearty 1/8 tangerine and 3/4 lemon. I can eat these lemons they are only slightly sour due to being part orange or whatever. By far the best citrus for the north. I had a tangerine that did well but got too big. Grapefruit is probably the easiest citrus to grow that is good to eat in my opinion or a tangelo half grapefruit half tangerine. Or the Meyer lemon.
All of this depends on the rootstock.
Anything grafted on macrophylla or volkarmerian will die here, my pursha lemon on macrophylla recovered transplant shock but is now struggling to grow, despite well draining soil and dry conditions, it's pretty clear it wont survive another winter here.
I will no longer buy anything on those rootstocks.
Same with carrizo, too sensitive
Seedlings can get a very diluted version of food once they're a year old, been doing this now with great success in combination with a grow light.
They grow like mad.