Berlin is different to the rest of Germany. It’s more open, more relaxed. People wear and do whatever they want and no-one cares. It’s a great place to be yourself and explore your most eccentric and creatives sides.
Within the open culture of the city, the concept of shared vegetable and flower gardens got quite spread out. In Tempelhof, the park where the old airport used to operate, there is one of the nicest versions of these gardens with great examples of creativity, beauty along with spaces to rest.