Longwood Purple American Wisteria

Wisteria frutescens ‘Longwood Purple’ is a twining American wisteria chosen for its unusually dark purple flower clusters. It climbs strongly and needs a durable support and planned pruning space. ([Longwood Gardens](https://longwoodgardens.org/gardens/our-plants/longwood-cultivars), [RHS](https://www.rhs.org.uk/plants/175584/wisteria-frutescens-longwood-purple/details)) ## Garden Use Train this deciduous vine on a substantial arbor, pergola, or trellis, keeping it clear of gutters and lightweight structures. Exact mature size varies with support and pruning: RHS gives 13–26 feet or more in height and 8–13 feet in spread, while another cultivar profile reports about 15 by 8 feet. ## Growing Conditions Plant in full sun for the best flowering; light part shade is also tolerated. It grows in moist, well-drained soil and may flower in late spring, with further clusters from summer into early fall. Leave room for the woody stems and the structure they need to climb. ## Maintenance Prune regularly to control the vine and maintain its framework. Select a strong support before planting, since mature stems become heavy and can twist weaker structures.