The germination process is influenced by external factors and internal factors. Hard seeds require special treatment in stimulating the germination process, such as scarification and stratification (giving exogenous hormones to seeds). This study aims to determine and describe the effect of exogenous giberelin hormone from Eichhornia crassipes root extract on viability and the germination periode of three hard seed types. This study used Randomized Block Design with two treatment factors, namely extract Eichhornia crassipes concentration (0 ppm, 200 ppm, 300 ppm, 400 ppm, and 500 ppm) and hard seed types (sapodilla seeds, soursop seeds, and longan bean seeds), using three repetitions. The parameters observed for seed viability were germination percentage and sprout vigor index, while germination periode parameters were germination index. Data were analyzed using ANAVA and continued with Duncan Test. The results showed that there was an influence between the concentration and type of seeds on viability and the length of time of seed germination. The best concentration was 500 ppm, the highest germination percentage value is 80.55%, sprout vigor index value was 387.33%, and germination index value was 0.254%/etmal. The type of hard seeds that have the best viability and long germination time are longan bean seeds.