‘Night Thunder’ Eye Shadow Iris is a cross between Iris pseudacorus (‘Yellow Flag Iris’) and Iris ensata (Japanese Iris). This cross comes from Japanese Iris breeder Hiroshi Shimizu, and the species name indicates both parents. ‘Yarai’ means ‘Night Thunder,’ paying tribute to the unusual color combination of peach, yellow and dark purple veining. Iris pseudata ‘Yarai’ performs beautifully in wet sites, even standing water. The unusual flowers are borne above the green sword-like foliage in late May and June.