Over the years, market gardening has become more important to the economy and taken up more and more space. The main products of market gardening are flowers, bulbs, vegetables, fruit, mushrooms and trees. Many of these products are grown in greenhouses.
Greenhouse growers put a lot of money and effort into environmentally friendly techniques. To protect produce against pests and diseases, they use natural enemies like wasps and ladybirds. This lets them use less pesticide.
