Annual Flower Plants

Marigolds

• The Mexican marigold is native to Mexico, Central America and South America. When it matures, this plant grows up to 3 feet tall. This plant is used for medicinal purposes and spices in Costa Rica, according to the Scientific Library Online Costa Rica. The flower on this plant blooms in the late summer and early fall; the petals have a golden coloration.

  The bloom season for French marigolds is July through October. Contrary to its name, the French Marigold is native to South America. Most of these flowers have a reddish or yellowish petals. The average height of a mature French marigold is 3 feet.

Angel's Trumpet

• Angel's trumpet is an annual plant native to South America. These flowers grow on shrubs or small trees; the mature height of angel's trumpet shrubs or trees is approximately 10 feet. The name derives from the shape of the flower, which has the appearance of trumpet pointed to the ground. These flowers prefer full sunlight for growth. The flowering period begins in April and ends in September. This flower is poisonous and can be harmful if consumed.

Daisies

• Native to South Africa, the African daisy grows up to 2 feet in height. Space the plants at least 1 foot apart. The blooming period for this flower is early summer to midfall. At full maturity, the African daisy flowers have a width of approximately 3 inches. This daisy grows best when it is indoors, due to its slow growth.

  The Gerbera daisy's height in maturity is 1 foot. This flower features white petals and a golden center. During the bloom period -- late spring to late summer -- this plant needs fertilizer often. This gerbera daisy is native to South Africa, Madagascar and South America. This plant can also be a perennial.

Bidens

• The devil beggar's ticks plant, or Bidens frondosa, is native to the United States. This plant prefers wetland areas for growth, such as riparian or swampy areas. These plants also grow in high elevations. The flowering season for devil beggar's ticks is usually the fall months and these flowers produce yellow petals. When mature, these flowering plants grow up to 6 feet.

  Bidens laevis, or beggar's ticks, grow in the United States and reach heights of 6 feet when they fully mature. The blossoming period for these flowers is during the fall. These flowers grow in full sunlight or partially shaded areas. Beggar's ticks need constant moisture to grow properly.