I believe in the zoning maps. For instance, people used to plant boxwood in our neck of the woods, but severe cold that hadn't been seen in decades (expect for a short super cold spell in the 1990's) were suddenly dying bc they needed one zone higher than us. Now the AG dept locally is recommending yews bc they are more cold tolerant.
I think we make the mistake of planting things that aren't going to live through the worst of our local climate and they are mostly plants that are zoned higher. Even flora local to places like Alaska don't do well bc our days get more gradually longer/shorter and our humidity is not as constant, so you shouldn't be entertaining plants from lower zones and those with far different climates than your own. You can do it, but I don't have enough time to put into my hobbies. Around my small farm, things that walk/trot/cluck get my attention first. Things that grow leaves have to sustain themselves until I can give them attention.