| Hosta | Cosmic Flash |
| Status | registered |
| Originator(s) | Rod Kuenster 2010 |
| Origin | 'Flash of Light' sport |
| Size category | |
| Plant height x width | 58x105 cm (23x41 in.) |
| Leaf length x width | 22x18 cm (9x7 in.) |
| Vein pairs | 14-16 |
| Leaf color | dark green,streaked,greenish-yellow,creamy white |
| Variegation | streaked, unstable |
| Leaf | nround, cupped, corrugated |
| Petiole | |
| Scape | |
| Scape height | 100 cm (39 in.) |
| Flower | near white |
| Flower length | 6.5 cm (2.6 in.) |
| Fragrant | |
| Flowering period | July - August |
| Fertile | yes |
| Pod | dark green |
| Ploidy | |
| Patents | |
| Info | |
| Sports | |
| Progeny | |