Grün was formerly part of the German Empire. In the German Empire, the place was called Grün.
The place is now called Zelená and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Grün | Austro-Hungary | Komotau | before the Treaty of Saint-Germain |
| Grün | Czechoslovakia | Chomutov | after the Treaty of Saint-Germain |
| Grün | German Empire | Komotau | 1938 |
| Grün | Czechoslovakia | Chomutov | 1945 |
| Zelená | Czechoslovakia | Chomutov | 1945 |
| Zelená | Czechoslovakia | Chomutov | 1992 |
| Zelená | Czech Republic | Chomutov | 1993 |