| Hosta | Cosmic Killer |
| Status | registered |
| Originator(s) | Rod Kuenster 2021 |
| Origin | 'Frosted Morning' x 'Warwick Comet' |
| Size category | |
| Plant height x width | 51x81 cm (20x32 in.) |
| Leaf length x width | 30x22 cm (12x9 in.) |
| Vein pairs | 13-15 |
| Leaf color | |
| Variegation | streaked, unstable |
| Leaf | |
| Petiole | |
| Scape | blue |
| Scape height | 76 cm (30 in.) |
| Flower | |
| Flower length | |
| Fragrant | |
| Flowering period | |
| Fertile | |
| Pod | |
| Ploidy | |
| Patents | |
| Info | Very interesting blue colors used in registrant's breeding program |
| Sports | |
| Progeny | |