Different flowers are pollinated in different ways. In some instances, flowers are self-pollinating. Others produce a large amount of pollen that is distributed far and wide by the wind. Then there are flowers that depend on bees, butterflies and/or hummingbirds to spread their pollen from the male flowers to the female. The flowers let the bees know where they are by being big and showy and/or having a heavy fragrance. The bees go in for the nectar, the pollen sticks to their bodies and is deposited at the next flower they visit.
Black-eyed Susan (Rudbeckia hirta) is also known as gloriosa daisy and yellow oxeye daisy. The plant produces leaves that grow at the base and measure from 4 to 7 inches long. The flower stems grow up to 3 feet tall and produce hairy, lance-shaped leaves from 2 to 3 inches long. The flowers grow up to 6 inches across and resemble a daisy with drooping yellow or gold petals and a large, dark center disk. Plant black-eyed Susan in full sun or partial shade and a moist, well-drained soil. The plant is hardy in USDA zones 3 to 10.
Rose-of-Sharon (Hibiscus syriacus) is a native of China and India and is hardy in USDA zones 5 to 8. The plant grows up to 8 feet tall and 4 feet wide with medium-green, egg-shaped leaves 3 inches long that turn chartreuse in the fall. White, red, purple, mauve, violet, or blue or bicolor, 4-inch wide flowers bloom from July through September, opening only in the daytime. Plant Rose-of-Sharon in full sun or partial shade and a soil that is moist, organic and well-drained.
Zinnia (Zinnia elegans) is also known as common zinnia and youth-and-old-age. The flower is an annual 2 to 6 inches across with purple, white, cream, green, yellow, apricot, orange, red, bronze or crimson petals and yellow-and-black center disks that grows on stems up to 30 inches tall. The flowers are accented by graceful, lance-shaped leaves. Plant zinnias in full sun and a well-drained, rich soil. The plant likes long, hot, dry summers and does not do well when hit by a frost.
Single hollyhock (Alcea ficifolia) is hardy in USDA zones 2 to 9. The plant enjoys full sun and a soil that is moist and well-drained. Creamy yellow, pink, red, salmon, white or yellow flowers with satiny, crape-like petals bloom in mid- and late summer amid light green leaves. The plant grows from 5 to 7 feet tall and 1 to 1-1/2 feet wide.