Also called false indigo for the rich blue shade of its flowers, this hardy perennial fills the spring garden with elegant spires of pealike blooms. It withstands drought -- and deer, rabbits, and other critters leave it alone. The bluish-green foliage looks great all summer long, and the charcoal-black seedpods create fun contrast in fall. Name: Baptisia australis Zones: 3-8
'Freak!' Leucanthemum: A fun, fluffy, even freaky, Shasta daisy, 'Freak!' The fluffy 2- to 2-1/2-inch-wide flowers feature layers of white petals. Plant in partial shade in really hot climates. Flowers bloom from June through frost. To encourage reblooming, remove faded blooms. Name: Leucanthemum x superbum 'Freak!' Growing Conditions: Full sun or part shade and well-drained soil Size: To 13 inches tall and 21 inches wide Zones: 4-8 Grow It With: Phlox
Cranebill geranium: One of the most reliable and longest blooming plants for the garden, cranebill geraniums add a burst of color that starts in spring and lasts until first frost. The small, cup-shaped blooms are available in blue, pink, rose and magenta. Select a site that has good drainage. Not related to the annual geranium used in planters. USDA Hardiness Zones: 5 to 9 (Pictured: 'Johnson's Blue')
The cranberry color of this pompom-like flower will electrify your garden! More must-grow new perennials: http://www.bhg.com/gardening/flowers/perennials/new-perennials/?socsrc=bhgpin061913cranberry=13
Astilbe The feathery plumes of astilbe rise above fernlike foliage for a month or more in late spring and early summer. Available in shades of pink, white, and red, astilbe is ideal for shady, moist spots. Plant a swath of these 2- to 3-foot-tall beauties for a memorable display year after year.
'Immortality' Reblooming Iris Noted for its reliable show of snowy-white flowers in spring and again in fall, this stunning tall bearded iris is among the easiest perennials to grow. The ruffled blooms are borne on 30-inch-tall stems above the swordlike foliage.