Flower Color: White Flower Form: In Clusters Flowering Period: Summer – Fall Mature Height: 25-35′(7-10m) Pruning Requirement: Prune Hard Planting Aspect: Full Sun Cold Tolerance: USDA Zone 5 Foliage: Yes Price Group: Standard About Polygonum aubertii This very vigorous climber is good for covering unsightly objects. Conspicuous panicles of tiny white flowers in late summer and autumn. Hard pruning in late winter or early spring will help keep this vine contained.