“This season, the month of May was particularly hot and dry,” says Leo De Jong, a commercial farmer in Zeewolde, in Flevopolder, the Netherlands. Flevopolder is in the province of Flevoland, the largest site of land reclamation in the world. Here a hectare of land costs up to 100,000 Euros. “At the moment, we are spending between 20,000 and 25,000 Euros per week on irrigation.”