Robuta

https://www.rhs.org.uk/plants/387338/brassica-rapa-(chinensis-group)-joi-choi/details Brassica rapa (Chinensis Group) 'Joi Choi' | pak choi 'Joi Choi' /RHS brassica rapa chinensis group joi choi pak rhs https://www.rhs.org.uk/plants/303567/red-choi-agm/details Brassica rapa (Chinensis Group) 'Red Choi' | pak choi 'Red Choi' Annual Biennial/RHS brassica rapa chinensis group red choi pak annual https://www.rhs.org.uk/plants/303557/summer-breeze-agm/details Brassica rapa (Chinensis Group) 'Summer Breeze' | pak choi 'Summer Breeze' Annual Biennial/RHS brassica rapa chinensis group summer breeze pak choi https://www.rhs.org.uk/plants/303551/choko-f1-agm/details Brassica rapa (Chinensis Group) 'Choko F1' | pak choi 'Choko' Herbaceous Perennial/RHS brassica rapa chinensis group pak choi herbaceous perennial choko