| Hosta | Sub Four |
| Status | registered |
| Originator(s) | Jeroen Linneman 2009 |
| Origin | 'Kifukurin Ubatake' seedling |
| Size category | small |
| Plant height x width | 15x20 cm (6x8 in.) |
| Leaf length x width | 9x3 cm (4x1 in.) |
| Vein pairs | 7 |
| Leaf color | dark green |
| Variegation | |
| Leaf | very shiny, flat |
| Petiole | |
| Scape | green |
| Scape height | 20 cm (8 in.) |
| Flower | near white |
| Flower length | 2.5 cm (1 in.) |
| Fragrant | |
| Flowering period | July - August |
| Fertile | no |
| Pod | |
| Ploidy | |
| Patents | |
| Info | ='Valley's Sub Four'. Very dark green foliage on a small plant. Jeroen wanted to grow hostas that remained lower than 4 cm! He didn't succeed. However they remain lower than 4 inch (10 cm). Another reason is that this year (2004) it is exactly 50 years since England's Roger Bannister ran a mile for the first time in less than 4 minutes. This became known as sub-four. |
| Sports | |
| Progeny | |