Why we love it: Bachelor’s buttons are beautiful and long-lasting as flowers for a cut garden. Their large variety of lively colors will add brightness to any arrangement. Look for them in blue ...

Some plants are just natural partners in the garden. There are several good companions for cosmos, but this dynamic bloom ...

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

so give them a light haircut if they’re looking scraggly, and they should perk up for fall. Bonus: The flowers are beautifully fragrant! This heat tolerant annual has pretty star-shaped purple ...