Seagrasses are declining globally, increasing interest in scalable seed-based restoration. Ruppia maritima (wigeongrass) is a pioneer submerged aquatic plant species that occupies variable-salinity estuaries and often expands following disturbance. This review synthesizes published literature describing relevant field and laboratory observations and research to evaluate seed production, seed- bank dynamics, storage, viability, germination, and early recruitment in R. maritima. Studies were drawn primarily from eastern United States estuaries, with some comparisons from South America, Australia, and Asia. Ruppia maritima in the eastern United States, like other global Ruppia species, produces abundant but episodic seeds, but its seed-bank longevity, viability, and recruitment vary with habitat stability and local hydrologic regime. Germination is commonly inhibited by elevated salinity while viability is retained, and often increases, after salinity reduction, indicating osmotic control and salinity-history effects. Temperature and drying further regulate germination in population- and habitat-specific ways. For restoration, seed collection, storage, and deployment should be matched to local salinity, temperature, and hydrologic conditions, while protecting donor/source beds and recognizing that short-lived seed banks and seedling establishment may constrain recruitment.