(Pryor 97) Iris 'Joie de Vivre' is a Louisiana iris introduction from Heather and Bernard Pryor of Australia, who obviously have a great appreciation for our US native iris. For inquiring minds, 'Joie de Vivre' translates into "enjoyment of life." The flowers that top the clumps in late April through early May are a ruffled, reddish lavender/brown highlighted by a yellow central blotch. I'll bet that's not a color you've seen very often...unless you frequent some seedy downtown street corners. When growing in moist, rich soils, the vigorous deer-resistant clumps of Louisiana iris can easily reach 3' tall x 5' wide in three years.