Hosta "Cosmic Sister" information:
| Size Category | medium |
| Hosta height x width | 40x80 cm (16x31 in.) inches |
| Leaf length x width | 23x19 cm (9x7 in.) inches |
| Vein pairs | 13-15 |
| Leaf color | |
| Variegation | streaked, unstable |
| Leaf type | |
| Petiole | |
| Scape | |
| Scape height | 50 cm (20 in.) |
| Flower | white |
| Fragrant | |
| Flower length | 3 cm (1.2 in.) |
| Flowering period | June - July |
| Fertile | yes |
| Pod | streaked |
| Ploidy | |
| Patents | |
| Sports | |
| Progeny | 'Cosmic Baby' = 'Cosmic Hippie' x PP |
