Leafy greens – in a month

If you have a keen eye, you will see three batches of spinach in the middle bin and growing. Every 18 days, there is a harvest round ready to be harvested. You are looking at production round 70 and on. So 70 batches of spinach have already been in this bin, grown and then harvested. https://www.youtube.com/watch?v=SSqKE5KrfmE