Take a look at completed and current projects of the GRÜNSTATTGRAU network partners.
Tip: Under „Datenbank Suche & Finde” (database – search and find) you can target, filter and assess the database, for example by filtering by the type of greening activity category or theme searched for or theme offered. There is also a free keyword search. (currently in German only). Some projects are also looking for people, implementation objects or similar – you are welcome to contact the project managers.