Summersweet ( Clethra alnifolia) blooms in the late summer, says Irish-Hanson, but it's wise to plant it during the spring.

Image of a flower with blue petals on a blue background ... a white background, with scattered fields of blue, red, and yellow — in a thin white frame. A long scroll of tiny thumbnail images ...

This pretty clumping plant boasts dainty, creamy white flowers that are just delightful and appear from spring through summer. You'll find that this is one of numerous perennial plants to add to ...