Abstract: A microgreen seed starter system includes a dome having a top portion and a bottom portion configured to couple together to form an enclosed growing area. The bottom portion defines an internal cavity configured to receive water to form a reservoir. One or more porous growing trays are positioned within the dome and are configured to obtain moisture from the reservoir via capillary action. The top portion includes a groove sized and shaped to receive an integrated growing light, which may be removable and reattachable. The dome includes stackable attachment features enabling multiple domes to be stacked while maintaining illumination for each enclosed growing area. The bottom portion may have a clover-shaped base and the top portion may be transparent or translucent to admit light. The system provides space-efficient, low-maintenance indoor cultivation of microgreens and other plants.