Joint implementation (e.g. tree planting)

Formed by residents and local organisations, the original focus of Greening Wingrove & Arthur's Hill was to address issues of litter and flytipping in Wingrove. The informal association later became a Cooperative (Community Interest Company) (1,2). Since its formation, the organisation aims to clean and green its part of Newcastle's West End through a diverse set of activities (15). These include the development of a former bowling green to become a community bike garden and community hub; encouraging locals' action on litter, promoting greening and food growing and local stewardship (4)

The Wild West End project encompasses the goals and visions of Greening Wingrove & Arthur's Hill. The project is aiming to explore local natural heritage, with a focus on species currently at risk such as bats, birds (swifts and house martins) and hedgehogs with the inclusion of residents, schools and local communities. Besides mapping the status of these species, habitat creation is also an objective to prevent the further decline of these at risk species in the area (15, 16)

The OrtoCollettivo project focuses on the creation of common spaces to grow local sustainable food while raising awareness about environmental challenges in cities. The project is based on teamwork: if there is work planned for today and someone cannot come to do that job, someone else will do it, with the ultimate benefit of everyone. It, therefore, stimulates common values about well-being, sustainable food production, and sharing time and activities collectively as a group (2). The initiative is ongoing and expanding, however in 2020 there were voices from the people living in the area that the poor maintenance of the terraces caused landslides and disturbed traffic. Nevertheless the NGO that initiated the intervention defended the project and suggested that the issue is caused by the lack of canals for the rain water to flow in. (8)

The association Initial Karlsruhe initiated the "social garden" in 2009 with the objective to facilitate access to the labour market for disadvantaged individuals by providing employment for long-term unemployed individuals with gaps in their CV. (Ref. 1) The participants can work on a 6000 sqm large former agriculture area up to six hours per day under the supervision of an agrarian engineer and a professional gardener. Harvested products are delivered by bicycle to charitable organizations free of charge. (Ref. 2, 9, 10)

O'pflanzt is! is a community garden in the inner part of Munich. It was founded in summer 2011 by Vanessa Blind. Her vision was to create an urban, socio-ecological community garden - a place of planting, sowing and harvesting, a place for meeting and learning, a piece of nature in the city, a creative wilderness. The garden is a real community garden, as there are no individual beds, and decisions are made collectively. Sustainable production is one of the main goals of the project, which is why planting is done organically without synthetic fertilizer and only wood and recycled materials are used. (Reference 2) In 2018, the area of the garden had to be returned to its owners. The leaders of the garden, however, managed to find a new plot within a year and a half. (Reference 13)

Craigmillar Town Centre Temporary Greening project transformed a vacant development site in Craigmillar which is reserved for a new high school, not scheduled to be built until late 2020, into a temporary green space. The site is at the centre of the wider Craigmillar regeneration area, adjacent to the newly-built Community Hub and neighbouring plots at varying stages of development. EDI's PARC Craigmillar Ltd is responsible for the regeneration in Craigmilar, working in partnership with Edinburgh & Lothians Greenspace Trust (ELGT) and the City of Edinburgh Council. The initiative will create a meanwhile space for community use, while works begin on the town centre development. The greening will allow the area to become an active space for the local community to enjoy and ease the construction process. Craigmillar Town Centre Temporary Greening forms part of a wider plan for the redevelopment of Craigmillar Town Centre. The masterplan, which was approved in December 2014, includes 330 homes, a retail centre, restaurant, community play area and high school – where the temporary greenspace will be situated until building commences. (ref 1, 3)

"Pending the creation of housing and new walks by 2020, the association Carton Plein and the EPA (Public Building Institution) of Saint-Etienne have created a temporary public space on the site known as "la Cartonnerie". A place for exchange and conviviality, the site hosts artistic installations, ephemeral installations and events. It is a laboratory conducive to imagining new ways of doing the city" (Ref. 1). The citizens also created shared gardens in this area called "Le Jardin Experimental"(Experimental garden) (Ref. 4).

There are various projects under the Den Grønne Kile initiative or the Green Wedge. The Green Wedge passes through all 4 subdivisions of the new district Aarhus K, and has a building percentage of 25% within the boundaries of the "wedge". (Ref. 3) Citizens are invited to contribute with green projects through the municipal innovation project "Green Citizen" (Grøn Medborger). (Ref. 1) The first and most prominent is a park created by citizens on an old railway track. The park has the nickname 'Kilen' and is a new city park for everyone, including upcoming residents and companies in the new district 'Aarhus K'. The park helps to promote the creative energy in the area and is in line with the development of the new district; it differs from the other city parks in Aarhus by offering space for many different activities and temporary projects that give life to 'Kilen' and make the trip along the railway track an exciting experience. (Ref. 1)

“Cooperation between, residents, businesses and the local authority to facilitate the adaptation of a large urban area in Aarhus for more rainfall in the future. They will be able to influence urban development in the direction of more attractive use of rainwater. Local Rainwater Drainage (LRD) is a current trend derived from the political desire to deal with some of the expected increase in extreme rainfall by collecting and using it for recreational purposes. Society will thus be able to adapt to climate change better whilst providing more recreational facilities and environmental improvements.” (Ref. 1)

The Leonardo Garden was a community garden in an empty building site of 8th district of Budapest, that implementation was initiated by KÉK, the Contemporary Architectural Centre. (Reference 3)
The recultivation of two neglected, empty plots of land created one of the earliest community gardens in Hungary. Plants for consumption, spices, herbs and ornamental plants were planted. The 95 plots in the Garden were cultivated by young people, families and pensioners, but the Garden also served educational purposes, as it frequently received school groups. The Garden has hosted a number of public community and cultural, gastronomic and musical events, which were well attended by both the neighbourhood and the general public. The community garden was closed in March 2018 because the company that owns the land wanted to start construction on it. (Reference 5)

The Community Supported Agriculture initiative in Bonn (SoLaWi Bonn) is an economically motivated arrangement between consumers, farm businesses and certified gardeners to improve the urban provision of local, organic food. Together they develop a concept for collaboration where the consumer group commits to pay an annual fee to cover all of the farmer's expenses for production (according to individual financial capabilities) and to work placements at the farm per year. In exchange, the customer members of the initiative receive a variety of fresh, seasonal, locally produced vegetables. The farmers profit from financial security and economic stability and the ability to apply environmental friendly agriculture practices without the pressure of the market economy (1,4).