A tea plant is a subtropical evergreen plant. It is cultivated in a wide range of areas from tropical regions to temperate ones. The annual average temperature should be at least 12 ~13℃ and the average precipitation over 1,300mm. Slightly acidic soil is good. Tea plants in Hadong belong to Chinese variety and have been cultivated in Hadong for about 1,200 years. They grow on crystalline dew drops and shine like emeralds.
The leaf is thick and hard. Its surface is shiny green. The petiole is short and each leaf has 30 teeth around the edge.
1-3 flowers bloom at the tip of new branches or between leaves and branches. Each flower has 180~240 stamens and 5 calyces.
Flowers start to bloom in June and start to fall from around late September through late October. Buds form even after that time but they do not bloom due to low temperature.
Pollination and fruition
Each flower has 2~4 ovaries. 13 days after pollination, fertilization status can be monitored. Fertilized ones start to grow in spring through summer and mature between mid October and mid November.
Fruition rate for cross fertilization is about 40~60% and that for self fertilization is 2 ~3%.
Seeds per ℓ : 450~800 seeds
Weight per ℓ : 620~730g
A primary root is taproot, reaching 2m under ground and secondary roots sprout from the primary root. Lots of root hairs are formed around 15-18cm under the ground. A tea plant grown from a seedling has a deep tap root while one grown from a cutting has a shallow taproot.