In asexually reproducing plants, the male and female parts are produced in the same flower. A flower with both male and female parts is called "hermaphorditic." This type of flower reproduces through seeds and pollen. In the initial "male phase," only the anthers are exposed. Once the plant matures into the "female phase," the anthers and the stigmas are exposed, and the anthers are covered with pollen.
The Magnolia virginiana, also known as the sweetbay magnolia, is a medium size ornamental tree with multiple trunks. The tree grows up to 20 feet high with a 15-foot wide crown. If grown in Northern climates, its growth is slow, but in the south, its growth rate is rapid. The magnolia prefers acidic soil, but does well in other types of soil and in most pH ranges. The soil should be moist and rich. Like all hermaphorditic plants, the magnolia propagates by seed, but can also be propagated by rooted stem cuttings.
The foliage is shiny green, and is silvery green under the leaves. Depending on the location, it is semi-evergreen to deciduous. In Northern climates, the leaves turn chartreuse in the fall. The flowers are creamy white, and open from late May to June. The fruit of the tree is green, and turn chartreuse in the fall. The seeds are bright reddish orange.
The red buckeye (Aesculus pavia) is sometimes known as the scarlet buckeye. It thrives in United States Department of Agriculture hardiness zones 4 through 8. It is a deciduous tree that prefers sun to partial shade and moist, well-drained soil. It does not tolerate drought. Though the red buckeye grows up to 30 feet in height, 20 feet is more commonly seen. The crown grows out to 20 feet.
The red buckeye leaves grow up to 6 inches long, and grow in groups of five to seven leaflets. The leaves are dark green, and drop of early in the fall, with no major color change. The flowers have 6-inch panicles that are salmon to medium red.
The common horsechestnut (Aesculus hippocastanum) thrives in only USDA hardiness zone 3, and is a large, deciduous tree that grows up to 75 feet high with a rounded crown. The leaflets grow up to 10 inches long, and are in groups of seven. The fall color is inconsequential--just an "ugly" yellow or brown. The flowers bloom in May, and are very showy. They are white and have yellow and red at the base. The fruit grows up to 2 ½ inches in diameter and each capsule has one or two seeds.
The horsechestnut prefers full sun, and moist, well-drained soil. The leaves tend to scorch in hot, dry locations, so plant it in an area that gets mostly morning sun if your location is how and dry.