Wood Poppy

Wood Poppy (*Stylophorum diphyllum*), also known as the Celandine Poppy or Yellow Wood Poppy, is one of the showiest and most reliable native wildflowers for the shaded woodland garden, producing large, bright butter-yellow poppy flowers 1.5 to 2 inches across above a rosette of deeply lobed, blue-green, pinnately cut leaves from April through June. Belonging to the Papaveraceae (poppy family), it is native to rich, moist deciduous forests and floodplain woodlands from Pennsylvania and Virginia westward to Wisconsin and Missouri.

Unlike the brief-flowered spring ephemerals that surround it, Wood Poppy is a true perennial with attractive foliage that persists well into summer, providing ground cover interest after the flowers have finished. The flowers are produced in continuous succession over a blooming season of 4–8 weeks, each lasting several days — a much longer floral display than most spring woodland wildflowers. The four-petaled, vivid yellow flowers are perfectly sized for early native bumblebee queens and are among the most valuable early spring nectar sources for woodland pollinators.

Like other members of the Papaveraceae family (Bloodroot, Dutchman's Breeches), Wood Poppy contains a distinctive orange to yellow sap in its stems and roots, which was used by some Native American peoples as a dye. The plant spreads readily by seed — the round seed pods ripen in summer and split to release seeds bearing elaiosomes, which are collected and dispersed by ants (myrmecochory). In ideal conditions, Wood Poppy forms large, slowly expanding colonies that carpet a woodland floor with yellow in spring.

For the native garden, Wood Poppy is one of the most rewarding and underused woodland perennials in the eastern US palette. It thrives in partial to full shade with moist, humus-rich soil and is one of the best options for a brightly colored, long-blooming spring wildflower in the shade garden. It is somewhat deer-resistant (the bitter orange sap discourages browsing). All parts of the plant should be considered mildly toxic and kept from pets and children. For more shaded native wildflowers, explore our Flower Identifier.