Celandine poppy Stylophorum diphyllum Photo/Illustration: Steve Aitken 1 2 3 4 5 6 7 8 9 10 11 Celandine poppy (Stylophorum diphyllum) sty-lo-FOR-um dy-FIL-lum Celandine poppy is an eastern U.S. native wildflower with attractive leaves and flowers. It prefers moist, shady areas and will naturalize in a site it likes. Leaves are bluish green, deeply cut, and lobed. Summer brings bright yellow, poppy flowers in small clusters. Use in a woodland, border, or rock garden. It may become weedy. Noteworthy Characteristics: Scalloped, deeply cut leaves and bright yellow flowers. Native to woodlands of the eastern U.S. Care: Needs moist, moderately fertile, humus-rich soil. in full or partial shade. Direct sun will scorch it. Propagation: Divide in spring, or sow seed in a cold frame in fall. Problems: Slugs and snails may attack plants. Overview Height 6 in. to 12 in. Spread 6 in. to 12 in. Growth Pace Moderate Grower Light Part Shade to Full Shade Moisture Medium to Wet Maintenance Moderate Characteristics Native, Showy Flowers, Showy Foliage Bloom Time Early Summer, Late Summer, Summer Flower Color Yellow Uses Beds and Borders Style Rock Garden, Woodland Garden Seasonal Interest Summer Interest Type Perennials Stylophorum diphyllumView the discussion thread.