Sustained Veggie: A Preliminary Look at Continuous On-Orbit Food Production

The Veggie system on the International Space Station (ISS) intermittently supplements the crew diet with fresh, leafy green crops. For 120 days, Sustained Veggie assessed the potential of continuous on-orbit crop production. Crops grown in Veggie have been grown concurrently, but Sustained Veggie staggered plant initiation and harvest to provide more constantly available produce. The objective of this preliminary study was to compare two growth schemes to determine the methodology for required inputs, optimal yield, food safety, and crew considerations.