The Field of Greens is an intriguing indoor hydroponic gardening facility which produces lettuce in a safe and effective manner in a small space. After the tour, participants will enjoy refreshments provided by the Field of Greens staff, during which the staff will be available for a question and answer session. There is no fee for the tour, but participants are encouraged to make a donation to cover the cost of the refreshments and delivery of lettuce to the homeless community.