| Hosta | Rookie Mouse |
| Status | registered |
| Originator(s) | Piotr Szustakiewicz 2015 |
| Origin | 'Holy Mouse Ears' sport |
| Size category | |
| Plant height x width | 5x13 cm (2x5 in.) |
| Leaf length x width | 4x4 cm (2x1 in.) |
| Vein pairs | 7 |
| Leaf color | green |
| Variegation | |
| Leaf | a bit rippled, cupped, folded, a bit wavy |
| Petiole | |
| Scape | |
| Scape height | 15 cm (6 in.) |
| Flower | pale purple,striped,bell |
| Flower length | 4 cm (1.6 in.) |
| Fragrant | |
| Flowering period | July |
| Fertile | |
| Pod | |
| Ploidy | |
| Patents | |
| Info | Smaller sport of sports from 'Blue Mouse Ears'. |
| Sports | |
| Progeny | |