"Organically grown" food is food grown and processed using no
synthetic fertilizers or pesticides. Pesticides derived from
natural sources (e.g., biological pesticides) may be used in
producing organically grown food.
The exact definition of what may be deemed "organic" differs
between different countries and also for specific food types.
Usually before farmers can claim to be producing organic food they
need to register and gain approval from the relevant governing
body.