| Hosta | Sea of Japan |
| Status | not registered |
| Originator(s) | |
| Origin | |
| Size category | large |
| Plant height x width | |
| Leaf length x width | |
| Vein pairs | |
| Leaf color | |
| Variegation | |
| Leaf | |
| Petiole | |
| Scape | |
| Scape height | |
| Flower | |
| Flower length | |
| Fragrant | |
| Flowering period | |
| Fertile | |
| Pod | |
| Ploidy | |
| Patents | |
| Info | Sometimes split leaves. |
| Sports | |
| Progeny | |