One catalogue calls Dianthus Jolt Cherry "...a shocking blaze of super charged color all summer long." I like this new series of dianthus because it is easy to grow, branches out nicely and makes a good "cut." It is a cross between Sweet William and annual dianthus. It is 16 - 20 inches tall and continues to set flowers all summer without setting seeds. And it is very flashy.
Dianthus Jolt Cherry from PanAmerican Seed
Red Profusion Zinnia from Sakata
I like using begonias for hanging baskets, in particular the newer sun tolerant versions. Because they do not have a robust root system they don't need as much water as other plants in baskets. Santa Cruz looks terrific in a hanging pot, but the falling flowers can be messy and are best used as outdoor baskets.
Santa Cruz Begonia