I went a little crazy with tomatoes this year. Wow oranges?? You're hard core. I live in NY and would to grow oranges and avocado.
Yes-I am in Ohio and that's the one thing I am still growing. From late May thru early October they are on my deck. During winter they live under a 1000 watt metal halide light (like the ones potheads use to grow marijuana...I had to explain to my nosy neigbor that I did NOT grow pot...). I put it on a timer for 12 hours a day. It runs the electric bill up about $19 but for me it's worth it. Also grow limes and lemons this way as well as a few tropical plants.