I think more and more cities and communities should start these things up.

We had this story in the UK here.

Allotments Lead to "Staggering" 51% Fall in Anti-social Behaviour.

In 2009, the early days of Landshare, Hugh Fearnley-Whittingstall visited a community allotment for local residents in Leigh, Greater Manchester, as part of a River Cottage programme. Two years on, the allotments are thriving, and local police are amazed to find that anti-social behaviour has fallen by over 50% in the area.

[link to www.landshare.net]