A Carolina silverbell is a small to medium sized deciduous tree with distinctive bell shaped flowers. Its scientific name has recently been changed from Halesia carolina to Halesia tetraptera, although the names are still used interchangeably. Other common names for the tree are "four winged silverbell" and just "silverbell." Native to the southeastern U.S., it flourishes mainly in woodland areas with warm, temperate climates. The Carolina silverbell grows in a fairly wide area in the wild, and requires the appropriate conditions and environment to thrive in cultivation.
A typical mature Carolina silverbell tree can grow as tall as 40 feet (12.2 m) with average height being about 20 to 30 feet (6 to 9 m). There is also a large form that grows exclusively in the Appalachian Mountains and reaches heights of 100 feet (30.5 m), called the mountain silverbell. The tree usually has a full, bushy appearance with abundant foliage and low branches. The leaves have an oval shape, with a smooth texture and green color, with yellow color in the fall.
The flowers are bell shaped, giving the Carolina silverbell its name. They bloom in April or early May and are usually white or pale pink. The blossoms are approximately 3/4 of an inch (1.9 cm) long and hang from the branches in small clusters, blooming all along the branches rather than at the ends. After blooming, the flowers give way to small four winged fruits called drupes that contain seeds. Drupes are not edible by humans, but are occasionally eaten by squirrels.
The native area of the Carolina silverbell is the southeastern U.S. It can be found growing in the wild mainly in North and South Carolina, Tennessee, Georgia, and Alabama, although it has been seen in small areas as far west as Oklahoma. It tends to grow near water sources like streams and rivers and on moist mountain slopes in wooded areas. The climate of areas where the Carolina silverbell grows is temperate, with a tendency for mild winters and precipitation evenly spread out through the year.
It is possible to grow Carolina silverbell in cultivation, but care needs to be taken to ensure the correct conditions. It is unable to withstand drought conditions or extreme cold. It needs to be planted in soil that drains well and kept moist with frequent watering; a layer of mulch can help to preserve moisture in the soil. A location with bright, indirect sunlight is ideal for encouraging abundant flowering, although the tree will also do well in shady locations, making it a versatile choice for outdoor landscaping.