Planting the Climbing Hydrangea Petiolaris is the perfect way to soften and decorate a trellis, tree trunk, or stark brick or stone garden wall. In May and June the vine produces abundant, large, 7 to 8-inch diameter lacecap clusters of wonderfully fragrant white flowers at the ends of branches that can extend up to 3 feet from the tree trunk or other supporting structure. The dried flower clusters and reddish brown peeling bark are attractive in winter. No attachments are necessary for this vine to climb as it naturally clings to bark, wood, brick and other surfaces using its own aerial roots, which won't harm your walls or trees.