Bearded iris is a spectacular garden plant.
Add a shade of blue to your garden.
Pearly everlasting, related to asters and chrysanthemums, is a ground cover from Asia with slightly fuzzy, narrow, silvery-gray foliage and clusters of white or whitish flowers that resemble daisies.
Seeing a flash of banana yellow on a bright green stem in the early spring just makes you want to shout.
The list of plants that could be classified as blue is open to interpretation.
In any gardener's inventory of beauty, the group of plants known collectively as "summer-flowering bulbs" may be the most unknown and under-utilized of them all.
Fall is the best time to buy and plant peonies.
Culver's root, a close relative of veronica, looks like a larger version of its relative.
Genial, long-blooming coneflowers are durable perennials that tolerate clay soils, hot weather, and a bit of drought.
Here's a list of plants along with their USDA hardiness zones.