Many city farms grow organic foods. These are from plants that do not use chemical fertilizers or pesticides. City farming also includes food growing cooperatives. They provide the opportunity to get involved in agriculture in their own city. In Brisbane, Australia a community group took a city park that flooded regularly and changed it to an organic city farm. Called Northey Street City Farm, people of all ages and backgrounds work together to grow food. Fruits, vegetables, herbs and flowers are grown. Ponds were introduced to attract beneficial insects, frogs and birds which help in pest control.