Dahlia 'Bishop of Llandaff'

Dahlia 'Bishop of Llandaff'
Species	Dahlia ×hortensis
Hybrid parentage	D. coccinea × D. pinnata
Cultivar	'Bishop of Llandaff'

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 Joshua 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.

A seed strain has been produced from this plant called 'Bishops Children', they retain the dark foliage color but produce a mix of flower colors and flower shapes from single to semi-double flowers in different sizes.

Plant Profile:- Height:1.1m (3&1/2 ft) Spread: 45 cm (18 in) site: Full Sun Soil: Fertile, free-draining Hardiness: Half hardy

Also comes in rich reds & purples, yellows & oranges, as well as paler shades

...
Wikipedia