“For once the colour associated with a boom in Zimbabwe is blue, not gold,” said The Economist. One major reason for the African blueberry boom is improved trade with China, said Fruitnet.com. Growing consumer interest in healthy eating has meant “premium fresh fruit” has become much more attractive to the Chinese. South Africa, whose biggest export has been citrus fruit since wine was overtaken in 2010, recently replaced Spain as the world’s largest citrus exporter. Yet, while South Africa leads the export market by volume, China and Brazil dominate global production, though most is used domestically, said South Africa’s agriculture minister John Steenhuisen.