Perennial plants that thrive in full sun include 'Perry’s Blue' Siberian iris, bee balm, 'Stella de Oro' daylily and 'Goldsturm' rudbeckia. 'Perry’s Blue' Siberian iris, Iris sibirica, provides sky blue and purple flowers with white and yellow markings for about four weeks in late spring and early summer, and the vertical leaves provide visual interest throughout the summer and fall. The plant is hardy in zones three through nine and tolerates a variety of soil types from dry to wet.
Bee balm, Monarda didyma, also thrives in zones three through nine in full sun. The plant grows wild in North America, but gardeners can plant it in the home garden to enjoy its mildew and deer-resistant red blooms, which attract bees, butterflies and hummingbirds.
'Goldsturm' rudbeckia, Rudbeckia fulgida, is another native North American plant that thrives in the home garden with full sun. The plant produces prolific yellow blooms with a brown center throughout the summer and fall and tolerates a variety of soil conditions.
'Stella de Oro' daylilies, genus Hemerocallis, are popular for their creamy yellow blossoms, which appear throughout the summer. The hardy plants perform well in a variety of light and soil conditions but produce the most blooms in full sun in zones three through nine.