| 'Knobby Russet' | |
| Genus: | Malus |
| Species: | M. domestica |
| Cultivar: | 'Knobby Russet' |
| Origin: | introduced 1820, Sussex, England |
The Knobby Russet, also known as Knobbed Russet, Winter Russet, Old Maids, and Winter Apple, is a large green and yellow apple cultivar with a rough and black russet and unusually irregular, warty, and knobbly surface. It has a soft and sweet creamy flesh and looks more like a potato than an apple. Knobby Russets are harvested in mid to late October and are in season between October and February/March.