If you live in Oklahoma, choose native flowers for your garden. Oklahoma has two hardiness zones, 6 and 7. Most of the state's native plants grow in both zones, but some of those plants need the extra warmth from the southern part of the state. Decide carefully for years of brilliant color.
Indian pink (Spigelia marilandica) is also known as woodland pinkroot and worm grass. The plant grows from 1 to 2 feet tall and produces 4 to 7 pairs of stemless leaves that grow 2 to 6 inches long. The flowers are 2 inches long, trumpet shaped and appear in early spring, lasting through summer. Plant Indian pink in full sun or partial shade and in a moist, but not wet soil. This flower does well when planted with small perennials. Indian pink grows in all of Oklahoma.
Cutleaf coneflower (Rudbeckia laciniata) is also known as green-head coneflower and cut-leaf coneflower. This plant grows 3 to 12 feet tall and produces gray-green leaves and flowers that measure 3 to 4 inches across, with green-yellow centers and golden petals that droop downward. Plant cutleaf coneflower in sun, partial shade or full shade and in a soil that is moist but not wet. The plant will attract birds to the garden. Cutleaf coneflower grows in all of Oklahoma.
Carolina Yellow Jasmine
Carolina yellow jasmine (Gelsemium sempervirens) is also known as jessamine. The plant is an evergreen vine that grows more than 20 feet long. The vine produces oblong green leaves that grow from 2 to 3 inches long on red-brown stems. Yellow 2-inch long, 1-inch wide tube-shaped flowers grow in clusters from late winter to early spring. Plant Carolina yellow jasmine in full sun or partial shade in moist soil. The vine does best when allowed to climb an arbor or trellis. The plant is hardy in zone 7 in the south of Oklahoma.
Passion flower (Passiflora incarnata) is also known as maypop and apricot vine. The plant grows from 8 to 12 feet long and produces leaves that measure 6 to 8 inches long and 5 to 6 inches wide. The flowers are very complex and are made up of 10 white petals that form the base for lace-like purple and white filaments, all of which surround the white center. Fruits, known as maypops, appear after the flowers and are about the size of an apricot with the taste of a guava. Plant passion flower in full to partial sun and in a light, moist soil. Plant the vine so that it can trail along a fence, up a trellis or over trees and shrubs. Passion flower grows in all of Oklahoma.