The elegant blooms of 'Gracieuse' Japanese Iris call to mind prized orchids as they float gracefully on tall stems. Blooming from early to mid-summer, flowers have white petals that darken to an ethereal purple-blue at the edges, with delicate yellow brushstrokes at the center. Plant this beauty near water features where soil stays consistently moist, and delight in the luminous blooms and graceful foliage. All season, arching leaves form an attractive backdrop for neighboring plants. (Iris ensata)