In the small town of Waregem, the test farm at Urban Crop Solutions is completely closed to the outside, and everything here is controlled. Using LED lights and hydroponics, it is relatively sterile so no pesticides are needed. With 8 layers of crops, Vandecruys says the 30-square-meter room can produce up to 220 mature lettuce plants per day. Their “Plant Factory” system can be built as high as 25 layers.