| Hosta | Blaue Ruh |
| Status | registered |
| Originator(s) | Hajime Sugita/Pete Ruh 2003 |
| Origin | unknown |
| Size category | large |
| Plant height x width | 58x135 cm (23x53 in.) |
| Leaf length x width | 31x20 cm (12x8 in.) |
| Vein pairs | 13 |
| Leaf color | blue |
| Variegation | |
| Leaf | |
| Petiole | |
| Scape | |
| Scape height | |
| Flower | |
| Flower length | |
| Fragrant | |
| Flowering period | June - July |
| Fertile | |
| Pod | |
| Ploidy | |
| Patents | |
| Info | High powdery blue. Upright. Large size; light blue color. Seed from H. Sugita in 1992. |
| Sports | |
| Progeny | |