"The number of North Americans doing this now is surprisingly large (Stokes). There are over 10,000 community gardens in the US. They have spawned the American Community Garden Association, which holds annual conventions (www.communitygardens.org). Once again, we are participating in the soil."
Source: Fowler, Edmund P., "The Politics and Science of Food," Green Horizon Quarterly, Vol. 1, 2003, 14. (Verified 04/18/14).