Surely a community garden should be tagged landuse=allotments. This is a widespread tag in general usage for at least 9 years.
--I agree. I came here to post this myself. Pkoby (talk)
How would a site that produces compost be defined? This page only seems to list things that would generate compost. Pmackay (talk) 22:38, 28 September 2014 (UTC)