Penstemon
These two new compact Penstemon sport strong, bold colors of bright pink and dark purple. The Rock Candy Penstemon begin blooming in late spring. Staying around 12 inches in height, they fit in well at the front of a border, along walkways or in containers. Trim spent blooms for another wave of blooms in the fall.
from Star Roses and Plants
Lobelia
Argyranthemum
Aster
Diascia
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