Black-Eyed Susan is considered a biennial, but since it seeds so readily, Rudbeckia hirta does not disappear from the garden. This native wildflower has deep yellow petals surrounding a black cone, which are an important food source for pollinators and songbirds. Rudbeckia hirta thrives in a wide range of site conditions, and is an excellent candidate for naturalizing in meadows and along woodlands and roadsides. Deadhead to prolong flowering.