Seeds from Clematis virginiana Virgins Bower or Devils Darning needle. This relative of Clematis sweet autumn is not nearly as prolific as its wayward cousin. Growing only about 10-15 feet tall this vine will be covered with these very fragrant white 1. 5 inch blossoms from July through September. Hardy in zones 6-9 this vine enjoys lots of blossom in full sunshine. Very easy to grow.