Kerria japonica, commonly called Japanese kerria or Japanese rose, is a tough-but-graceful, spring-flowering, deciduous shrub that is native to certain mountainous areas of China and Japan. It typically grows to 3-6’ tall and to 6-8’ wide on slender, arching, yellowish-green stems that remain an attractive green in winter. Single, five-petaled, rose-like, yellow flowers (to 1 1/2” diameter) bloom somewhat profusely in spring. Double-toothed, narrow, ovate-lanceolate, bright green leaves (to 4” long) turn yellow in fall.Genus name honors William Kerr (d. 1814), Kew gardener and collector, who collected in China, Java and the Philippines.Specific epithet means of Japan.Plants in the genus Kerria are sometimes also commonly called Easter rose because the flowers typically bloom around Easter time and resemble roses.‘Pleniflora’ is a very popular double-flowered cultivar that features rounded, pom-pom-like, yellow flowers (to 2” diameter). It typically grows taller (to 8-10’) and more upright than the species. Cultivar name means full flowered. Synonymous with K. japonica ‘Flore Pleno’.