This spectacular bloomer produces cascades of fragrant, lilac-hued flowers, treating homeowners and viewers to a feast for the eyes and nose. Gardners advise proceeding with caution when it comes to planting wisteria: It's known to be a fast, aggressive grower that can grow to be quite heavy, so be sure to plant near a sturdy structure on which it can climb. Also, prune in late winter, removing at least half of the previous year's growth to ensure abundant flowering.
