| Hosta | Jaz |
| Status | registered |
| Originator(s) | Greg Johnson 2004 |
| Origin | 'Sum and Substance' x yingeri |
| Size category | |
| Plant height x width | 30x75 cm (12x30 in.) |
| Leaf length x width | 18x15 cm (7x6 in.) |
| Vein pairs | 9 |
| Leaf color | green>golden yellow |
| Variegation | lutescent |
| Leaf | thick, shiny |
| Petiole | |
| Scape | |
| Scape height | |
| Flower | whitish |
| Flower length | |
| Fragrant | |
| Flowering period | August - September |
| Fertile | no |
| Pod | |
| Ploidy | 2.4-2.4-2.4 |
| Patents | |
| Info | Smooth, shiny, gold foliage producing the illusion of yellow plastic. Very heavy substance. It actually feels like plastic. |
| Sports | |
| Progeny | |