We bought an ash tree (Fin: lehtosaarni) at Tahvoset's open day - just because we don't have an ash tree anywhere. Ash do grow in southern Finland (especially on the Åland islands and throughout the archipelago) but we don't have any at all. Planning to plant it in a sunny spot out of the wind up at Rosendal. It's a bit of a gamble.
Wikipedia: Fraxinus excelsior.