Before you buy a plant, find out its frost resistance and check the climate map.
Belonging to each zone is determined by the ability of plants to withstand without damage the minimum winter temperatures inherent in this climatic zone.
Therefore, plants from zone 2 grow well from zones 3 to 6. Then they can hardly tolerate hot conditions and look depressed.
Plants from zone 5 will freeze in zone 4 and will require additional shelter in winter, and in zone 3 they will most likely freeze to the soil level every year, even with shelter, and will eventually die.