Greened up Tree Pit

If you live in Vienna, love to garden but don't have a garden of your own, you can become a "tree patron" which means that you are officially allowed to transform a tree pit in your own small garden - you just have to apply at the competent area renewal office. I think this is a very good idea, the city gets more green without spending money and hobby gardeners get a "playground". I hope the dogs and human passersby respect these little gardens...