purple clematis 'Flore Pleno'

'Flore Pleno' is a large, vigorous, profuse-flowering, deciduous climber with mid-green leaves. The elegant, mid-purple, double flowers, up to 8cm in diameter, have a rich, velvety appearance and a semi-nodding habit. Each flower has four to six broad outer sepals surrounding an inner cluster of smaller ones to give a rosette-like appearance. Flowers mid to late summer