The Craenen, Gerads and van Kempen partnership aims to produce the highest quality leeks, and are trail blazers when it comes to innovation in alternative methods of pest and disease control. Gerard van Kempen: “We always consider things from the plant's point of view: what does it need? For example, by taking leaf samples to see what the leek lacks, we can tailor the fertilisation process to the specific requirements of the crop. Another advantage is that we don’t give the plant too much fertiliser.”