Overall objective of this Interreg 2 Seas project is to develop a soil-free cultivation system to grow densely sown crops (such as lamb’s lettuce, watercress, spinach or rocket) by upgrading existing early stage prototypes to efficient hydroponic growing systems. This technological innovation (TRL3 to TRL6) will allow soilless cultivation of densely sown crops. Technology transfer will allow for uptake at manufacturers and growers level. Densely sown crops are important for the local economy in the program area. Increasing demand steers production.