1. Association for Japan Allotment Garden (ND) Japan. http://www.jardins-familiaux.org/nations/jp/eng/jp_e_start.html. Accessed 12 Aug 2021
2. BDG (Bundesverband Deutscher Gartenfreunde) (2021) Zahlen und Fakten. https://www.kleingarten-bund.de/de/bundesverband/zahlen-und-fakten/. Accessed 12 Aug 2021
3. Berlin Online (ND) Gemeinschaftsgärten in Berlin. https://www.berlin.de/gemeinschaftsgaertnern/gemeinschaftsgaerten/gemeinschaftsgaerten-in-berlin/artikel.879232.php. Accessed 10 Oct 2021
4. Borsa Italiana (2016) A vegetable garden in the city, a realistic dream. https://www.borsaitaliana.it/notizie/italian-factory/tendenze/034orti.en.htm. Accessed 25 Sep 2021
5. Certomà C (2016) ‘A new season for planning’: urban gardening as informal planning in Rome. Geogr Ann: Series b, Hum Geogr 98(2):109–126. https://doi.org/10.1111/geob.12094