Common name:Missouri Evening Primrose
Botanical name:Oenothera macrocarpa

Missouri evening primrose is a sprawling perennial that typically grows 6 to 12 inches tall and 12 to 18 inches across, though through reseeding, it can spread farther. It has singe, 4-petaled, mildly fragrant, bright yellow flowers which open for only one day (usually open late afternoon and remain open until the following morning). Flowers are generally upward-facing, but sometimes rest on or touch the ground. Long spring to summer bloom period. Flowers are followed by somewhat unique, winged seed pods. Narrow, lance-shaped leaves. Stems are sometimes a vivid crimson red. Grow in rock gardens, perennial borders, parkstrips, and evening gardens. Many cultivars available.

Common name:Snowball Viburnum
Botanical name:Viburnum opulus 'Roseum'

One of the old-fashioned "snowball bushes" that has been a garden favorite for centuries, this plant is best known for its large heads of sterile flowers that open green and mature to ivory white. These blooms may last for weeks, but they result in no fruit. It is a large-growing, rounded shrub that may reach 12 feet tall and wide. Leaves are bright green during the summer, and turn a purplish red in the fall