Cultivation of Oil Tea (Camellia oleifera)

Oil tea (Camellia oleifera) is an evergreen small tree or shrub of the genus Camellia in the family Theaceae. It is mainly distributed in the hilly and mountainous areas of southern China, and its seeds can be processed and pressed to extract tea oil. Tea oil is clear in color, stores well, and is often called "Oriental olive oil"; it is quite popular in the edible oil market. Oil tea cultivation generally includes site selection, seedling raising, planting, tending management, and harvesting, and it is an economic forest project with a long investment cycle.

Oil tea prefers a warm and humid climate. It is suitable for planting in hilly areas with deep soil layers, good drainage, and slightly acidic red or yellow soil, with sunny slopes being preferable. Planting is mostly arranged in spring or autumn. Either seedling trees or grafted seedlings can be used, and grafted seedlings usually bear fruit earlier and have more stable characteristics. When planting, pay attention to reasonable row and plant spacing to ensure ventilation and light penetration, and after planting, water thoroughly to settle the roots.

After entering the tending period, management focuses on weeding and loosening the soil, topdressing, shaping and pruning, and pest and disease control. In the young forest stage, weeds should be removed promptly to avoid competing with young trees for water and nutrients; after the forest matures, overly dense branches and diseased or pest-damaged branches should be pruned appropriately so that the canopy is well ventilated and lit, which helps increase the fruit-setting rate. Anthracnose and soft rot are common diseases. Doing a good job with water and fertilizer management and clearing away fallen leaves and fruit in normal times can reduce the probability of disease.

Oil tea can be said to be a treasure from top to bottom. The tea seed cake left after oil pressing can be used to improve soil and suppress underground pests, and some farmers make use of it in crop rotation. Oil tea rootstock can also be grafted with ornamental camellias, expanding returns from courtyards and nursery stock. Because it bears fruit for many years and provides stable returns with proper management, many mountainous areas cultivate oil tea planting as a specialty industry to help people increase income and become better off.