Celandine poppy (Stylophorum diphyllum) is a popular Eastern U.S. native loved for its 12-18 inch tall 4-petaled, yellow flowers. Its blue-green, pinnately lobed leaves are silvery on the underside. It seeds-in readily, which is a good thing, as plants disappear by late May and comeback early next spring in abundance (USDA hardiness zones 4-9). Virginia bluebells (Mertensia […]