Ilya, by observing the latitude of Europe, it's obvious that the Gulf Stream strongly moderates Western Europe's temperatures, but Western Europe lacks some of solar energy available to the Eastern US. Unfortunately for us, being on the eastern edge of the North American continent means we get cold Winters as well as fairly hot Summers. Areas south of my location aren't necessarily much hotter in Summer than my area, but the heat is of considerable longer duration. Our area can grow tobacco, melons, aubergines, sweet potatoes, and other heat loving crops. Marginal crops are okra, peanuts (groundnuts). Cotton is impractical to grow in this area, but is found about 250 miles (400 kilometers) to our south.
I'm somewhat optimistic that some of my selections and additional items I've collected will survive and perhaps thrive in my area. The 5* citrumelo struggles a bit getting through Winter, but recovers strongly. Ichangequats have done poorly during Winter. TaiTri is quite similar to 5* in hardiness to this point. I'm not yet certain that Poncirus+ is equally hardy to regular Poncirus, as the last 2 winters have been mild.