Zizia aptera

The lower leaves of heart-leaf golden alexanders look like something you'd find at the base of an old-world sea-holly (another member of the parsley family, not-so-incidentally).  But once plants get airborne in spring, they go the usual parsley family route, with ferny compound leaves and umbels of yellow flowers.  A pleasing plant for wildflower plantings and cottage gardens, it's a favorite of black swallowtails and other pollinators.  Propagated from seed.  Deep 3.5-inch pots.  Zone 3.  Photo: Chelsea Monks, Black Hills National Forest

Full sun to light shade; average to dry soil; 2'x1'; spring