Red Spinach Growth Protocol
Throughout the WisDM Green workflow, Amaranthus cruentus (red spinach) (Everything Green Pte Ltd) seeds were sowed in peat moss (Everything Green Pte Ltd) on day 0 and repotted into gardening machines (9 plants per machine) (Click & Grow LLC) on day 7. The machines provided continuous water supply and 16 h of light per day (Figure 2b). On day 21, after reaching seedling stage, Starxgrow Nitrosol Liquid Fertilizer (10.5% N, 2.3% P, 6.8% K, and 1.68% Ca) (Starxgrow) was added to every plant. Mono-compounds and compound combinations were applied to each plant on day 21, except the control red spinach, which contained only the Starxgrow Nitrosol Liquid fertilizer. Water was added to the tank in the machine when level was low. The water in Singapore goes through purification process and may include traces of chlorine \cite{2021}. The parameters of water in Singapore are outlined in Table 1. Red spinach were harvested on Day 50. The complete schedule for all 4 experiments is listed in Table 2. All plants were randomized across all machines using the example code in the Supporting Information.