Camellia sinensis: The Plant Behind Tea

Tea comes from a remarkable plant that has been cultivated for centuries in cool, mountainous regions around the world. The tea plant is a low-growing evergreen shrub, carefully maintained by regular pruning. Its tender leaves and buds are harvested, then dried and processed to produce the many types of tea enjoyed globally, including green, black, oolong, and white tea.

Botanically, the tea plant belongs to the family Theaceae, genus Camellia, and species Camellia sinensis. Within this species, there are two main cultivated varieties: Camellia sinensis var. sinensis and Camellia sinensis var. assamica, along with several minor local types. These varieties differ in their growth habits, leaf size, and environmental preferences, which allows tea to be grown across a wide range of regions.

Camellia sinensis is a camellia shrub that produces small, white flowers that are less showy than those of ornamental camellias. However, the plant itself is visually appealing, with glossy, evergreen leaves that give tea gardens their lush, green appearance throughout the year. Beyond its beauty, the shrub is valued for its resilience and adaptability.

Climate plays a key role in tea cultivation. Camellia sinensis var. sinensis is more tolerant of high altitudes and cooler temperatures, making it well suited to mountainous areas. In contrast, Camellia sinensis var. assamica thrives in hot, humid lowland climates. Tea plants generally require abundant rainfall, ranging from 900 to 6,000 millimeters annually, with an ideal average of about 1,600 millimeters evenly distributed throughout the year to support continuous growth.

In the wild, Camellia sinensis var. sinensis can grow up to about 5.7 meters tall. In cultivation, however, it is kept pruned to just over one meter in height. This practice encourages the growth of young shoots and makes harvesting easier, ensuring both productivity and consistent tea quality.
Camellia sinensis: The Plant Behind Tea

The amazing health benefits of tea

Originally, tea referred to one species of shrub that was cultivated in China – Camellia sinensis – known as the black tea shrub.

The health benefits of tea have been touted for centuries. It have probably been utilized, drunk, eaten, pickled by mountain tribes since time immemorial. Chinese legend claims that tea consumption goes back as far as as 2737 BC.

Some of the earliest mentions of tea in Chinese literature refer to it as a remedy for a diverse range of complaints, from headaches to depression.

Camellia sinensis

Camellia sinensis
Probably the single factor that has most contributed to the growing popularity tea is its healthful reputation.

The basis for all the buzz about tea's healthy properties are polyphenols. The tea plant contains many kinds of polyphenols, catechin being particularly prolific.

Many researchers suggest that consumption of antioxidant-rich foods reduces damage to cells and biochemical from free radicals.

Using epidemiological techniques and comparing tea drinkers with non-drinker in cohort studies over a long period of time, it was found that tea reduces the risk of several major premature killing diseases many of which are related to luxurious lifestyles and polluted environment.

These include cancer, arteriosclerosis and cardiovascular diseases, neural and obesity problems, diabetes, disease of the kidney and liver, pulmonary ailments, flu, SARS and even AIDS.

Tea contains tannins, fluoride, selenium, zinc, flavonoids, polyphenol, beta-carotene, and vitamins C and E. It also has an alkaline effect within the body.

This alkalinity makes it useful in the treatment of ulcers, or for those who eat too many foods that have an acid-forming reaction in the body, such as meats and diary product.
The amazing health benefits of tea