Plant Profile: Camellia oleifera

Camellias are native to southeastern Asia and were first brought to the United States in the late 18th century. Their vibrant blooms and evergreen foliage quickly made them a beloved choice for southern gardens. Today, numerous hybrids of Camellias have been developed, enhancing their beauty, resilience, and fragrance, allowing them to thrive in a wider range of climates across the country. They are among the few flowering plants that provide a delightful splash of color during the late fall, winter, and early spring months.

The Tea-oil Camellia is characterized as a small, dense tree or a large, multi-trunked evergreen shrub, reaching heights of up to 20 feet. It features a distinctive smooth, velvety bark with a cinnamon hue, glossy deep green leaves, and fragrant white flowers that bloom in late fall or early winter.

A series of harsh winters severely damaged many Camellia collections at the U.S. National Arboretum; however, the Tea-oil Camellia demonstrated remarkable resilience, sustaining little to no winter damage. This hardiness makes it a crucial species for developing cold-tolerant cultivars. Notable hybrids, such as ‘Lu Shan Snow’ and the even more resilient ‘Plain Jane’—named for its less attractive flowers—are often used as parent plants to create stunning cold-hardy ornamental Camellias.

The species name "oleifera" is derived from Latin, meaning "oil-bearing," and this plant is extensively cultivated in China for its seeds. Seed pods begin to form during the flowering period and will burst open when ripe. The seeds can be processed into a high-quality oil, primarily used in Asian cuisine. Tea oil is lighter than olive oil, possessing a mild flavor and a tea-like aroma, while being rich in healthy fats. Although the seeds can be used for propagation, they do not produce exact replicas of the parent plant. For true duplicates, root cuttings are the recommended method of propagation.

In colder regions, it is advisable to plant Camellias on the north or northwest sides of protective structures, such as buildings or larger plants, to shield them from harsh, drying winds. The Tea-oil Camellia can withstand temperatures as low as -10°F (USDA Zone 6) for short durations. Spring planting allows the plant sufficient time to establish itself before facing the heat of summer or the challenges of winter. This species thrives in partial shade and blooms best in very light shade, preferring acidic (pH 5.5-6.5), moist, well-drained soil. It also shows mild resistance to deer damage.

In terms of pests and diseases, Camellias are vulnerable to various viruses and fungal issues, including dieback, cankers, flower blight, and root rot. Keep an eye out for pests such as scales, aphids, planthoppers, and spider mites, which can be particularly problematic for stressed plants.