Hosta "Isle Royal" information:
| Size Category | large |
| Hosta height x width | 65x200 cm (26x79 in.) inches |
| Leaf length x width | inches |
| Vein pairs | 16-18 |
| Leaf color | |
| Variegation | |
| Leaf type | shiny above, very corrugated |
| Petiole | shiny above, very corrugated |
| Scape | |
| Scape height | 110 cm (43 in.) |
| Flower | |
| Fragrant | |
| Flower length | |
| Flowering period | July |
| Fertile | |
| Pod | |
| Ploidy | |
| Patents | |
| Sports | |
| Progeny |
