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. As with all dahlias, frost blackens its foliage, and its tubers need to be overwintered in a dry, frost-free place. Read More : Click Here
Dahlia is a genus of bushy, tuberous, herbaceous perennial plants native to Mexico. A member of the Asteraceae (or Compositae), dicotyledonous plants, related species include the sunflower, daisy, chrysanthemum, and zinnia. There are 42 species of dahlia, with hybrids commonly grown as garden plants. Flower forms are variable, with one head per stem; these can be as small as 2 in (5.1 cm) diameter or up to 1 ft (30 cm) ("dinner plate"). This great variety results from dahlias being octoploids—that is, they have eight sets of homologous chromosomes, whereas most plants have only two. In addition, dahlias also contain many transposons—genetic pieces that move from place to place upon an allele—which contributes to their manifesting such great diversity. Read More : Click Here