| Hosta | Osiris Louis Cyr |
| Status | not registered |
| Originator(s) | Les Jardins Osiris |
| Origin | 'Green Piecrust' seedling |
| Size category | gigantic |
| Plant height x width | 105x210 cm (41x83 in.) |
| Leaf length x width | 30x23 cm (12x9 in.) |
| Vein pairs | |
| Leaf color | green |
| Variegation | |
| Leaf | |
| Petiole | |
| Scape | |
| Scape height | |
| Flower | near white |
| Flower length | |
| Fragrant | |
| Flowering period | July |
| Fertile | |
| Pod | |
| Ploidy | |
| Patents | |
| Info | ='Louis Cyr'. |
| Sports | |
| Progeny | |