Instafarm trays are designed for one-time use and most will not regrow a second time. That being said, most trays can be transplanted into a larger growing pot or the garden to grow the full-size plants after harvesting the micro greens. Returning a harvested or partially harvested tray to the Instafarm is not recommended as it may confuse the algorithm and cause watering issues. If you accidentally do this the algorithm can be “reset” by leaving that tray slot empty for 90+ minutes and then placing a new tray in it.