I live in the right part of Belgium

Comparing the green parties in both parts of Belgium is comparing apples and oranges (pun intended). The Flemish green party (Groen!) is a poor extract of what it used to be and if you heard Mieke Vogels debate (both in the Flemish parliament as well as during elections) I am surprised they didn't loose any more votes. You don't need to vote Groen! to vote green anymore although maybe some use their vote to make a statement. And they are free to do just that. And while Mieke's intentions are good, the execution is poor. (I liked the old Groen! politicians better)