Chinese Wisteria Chinese Wisteria bears drooping racemes of fragrant lilac or mauve flowers around 1 ft in length. A vigorous woody, deciduous vine with large pinnate leaves, Wisteria needs sturdy support in a sheltered south or west facing position. Prune regularly to keep this fast-growing climber under control and encourage flowering. Position: Full sun to partial shade and any aspectSoils: Moist, well-drainedHardiness: Mostly hardy in IrelandSize: 30 ft high - 20 ft spread