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Dahlia Bishop of Llandaff   

The RHS Award of Garden Merit is awarded for ease of cultivation, excellence and constitution but not necessarily hardiness. Dahlias are native to the high plains of Mexico and other parts of Central America. They were cultivated by the Aztecs in pre-Cortez times. They were introduced to Europe by the Spanish in 1784. They were first first grown in the Botanical Gardens in Madrid. Abbe Cavanille named the new plants Dahlias in honour of Andreas Dahl a Swedish naturalist and student of Carl Linnaeus. Bishop of Llandaff has large glowing deep red flowers up to 5" across, fading slightly when fully open and supported by foliage which (if planted in enough sun) becomes nearly black. It is a wonderful contrast 

Planting instructions

Tender. Store dry till March, then pot up and grow with warmth to plant out in late May. They need planting in a sunny situation with good compost below them and regular dead heading in the late summer to encourage repeat flowering. Growing them initially as potted plants early in the season will give you a head start. In the winter they may need to be lifted and kept frost free, depending on the conditions.