Wisteria 'Prematura' A natural hybrid. Very dark violet flowers, almost blue in colour with a yellow blotch or stain like mark in the centre. Long, clustered bunches, 20/25 cm in length, slightly infrequent in fullness, elegantly scented. It begins to bloom during the 1st or 2nd year. Synonyms: Wisteria praecox, Wisteria floribunda ‘Domino’,Wisteria coerulea.