The Purple Wisteria is easy to grow and adapts well to a wide range of soils. To get the most out of this colorful show, be sure to place your Purple Wisteria where everyone can see it. Wisteria plants have lavender-purple flowers that are up to 1 foot long and produce a wonderful scent. Hardiness Zones 4-9. You receive one bare root plant. This is a pre-order and will be available late March or Early April.