Intriguing deep purple45blue flowers that are so dark they almost appear to shimmer black in the summer sunshine the large fragrant blooms set atop particularly long stems make an astonishing exhibit for the show bench and are equally eye catching in flower borders sweet pea 39blue velvet39 is a free flowering variety producing 4 or five blooms per stem height 180cm 4071amp343941 spread 30cm 4012amp343941