Tags: Cultivar (Cultivated Variety).
BBC reference.Dahlia ‘Bishop of Llandaff’ is a branching tuberous tender perennial cultivar with dark eggplant-colored almost black foliage. This produces a stunning contrast with its scarlet flowers. The plant was first bred by Fred Tresedar a Cardiff nurseryman. It was selected by and named to honour Pritchard Hughes Bishop of Llandaff in 1924 and won the RHS Award of Garden Merit in 1928. The plant is about 1 m tall and flowers from June until September.
