This Clematis teaches a bold lesson on the beauty of contrast. Each of its profoundly purple petals bears a streak of snowy white that culminates as a pale velvety puff at its center. Dramatic doesn't even begin to describe the breathtaking array of Clematis Venosa Violacea in full bloom. Making its debut in 1883, this Victorian era French heirloom Clematis continues to capture the imaginations of modern gardeners everywhere. Venosa Violacea opens her 4 inch petals beginning in spring and holding strong through early autumn. It can grow to a respectable 10 feet in height and a slender 2 feet wide which makes it perfect for garden structures like trellises, lampposts and mailboxes. It is the perfect colorful effect to liven up a quieter time of year for most gardens. Pruning Group III. Zones 4-9.