After the 1991 collapse of Soviet subsidies and imported fuel/fertiliser cut off conventional farming inputs (Cuba's "Período Especial"), the government redirected vacant urban land to food production, creating organopónicos: raised-bed market gardens run mostly by worker cooperatives on state land granted rent-free.
By 2013 the national programme counted more than 4,000 urban farms, 385,000 vegetable gardens and 6,000 intensive gardens, together producing about 1.2 million tonnes of vegetables and herbs — over half of urban consumption of those crops (Sustainable Food Trust; effectivecooperation.org/GPEDC delivery note). In Havana specifically, food gardens cover about 8% of city land, and local farms supply roughly 100,000 tonnes of fruit and vegetables a year, an estimated 50-60% of the city's fresh produce; 97 high-yield cooperatives were operating in the city that year.
Growers use crop rotation, compost and biological pest control with minimal synthetic pesticide, and cooperatives that exceed state quotas can sell surplus at farmers' markets, with top earners making up to double the national wage — an incentive credited with sustaining participation for three decades. The state kept investing through downturns (e.g. $22.6 million allocated to agriculture in 2016).
The model is not self-sufficient: Cuba still imports significant meat and wheat, and independent reporting (Sustainable Food Trust, Tropical Resources Institute at Yale) cautions that fuel and input shortages during Cuba's ongoing economic crisis strain the programme, and that cheaper imported produce could undercut local growers if trade barriers ease.
Read the full analysis: https://sustainablefoodtrust.org/news-views/urban-farming-in-cuba/
Where this practice's information was retrieved from, and when.