It's hard to find a more beautiful vine than Wisteria! The fragrant, violet-blue or lavender blooms of Wisteria appear in mid- to late spring, the long racemes draping down from soft green heads of foliage, shifting gently with every breeze -- the effect is graceful and thoroughly attractive! Once established, Wisteria grows very vigorously, covering arbors, pergolas, trellises, and walls.