From forest trees to planted gardens
Tea grows as a tree if left alone, and old unpruned trees still exist in Yunnan and across upper South-East Asia — the gu shu material that commands high prices in pu-erh. Systematic cultivation means keeping the plant pruned to a picking table, planting it in rows and managing the harvest cycle. That shift changes yield, labour and consistency, and it is what makes tea a crop rather than a gathered product.
Two varieties, and why it mattered commercially
The recognition in the 1820s and 1830s that large-leaf tea growing wild in Assam was the same species as the Chinese plant was commercially decisive: it meant tea could be grown at scale outside China. Small-leaf sinensis suits cooler, higher, more seasonal conditions and is associated with aromatic character; large-leaf assamica suits hot wet lowlands and gives body and briskness. Almost every origin’s character starts with which one grows there.
Seed populations and the move to clones
Older plantings were grown from seed, producing genetically varied populations — Qun Ti Zhong in Chinese usage. Twentieth-century breeding produced named clonal cultivars selected for yield, hardiness, budding date or aroma: Yabukita in Japan, Longjing 43 in Zhejiang, Qing Xin and Jin Xuan in Taiwan, TRFK selections in Kenya. Clones are uniform and earlier; seed populations are variable and later, and are prized for exactly that variability.
Why this shows up on packaging
Cultivar names on a packet, budding-date premiums, elevation claims and old-tree marketing are all consequences of this history. Longjing 43 is planted largely because it buds early and pre-Qingming tea commands a premium; Jin Xuan exists because a breeding programme selected for a creamy note. When a label tells you a cultivar, it is telling you about a deliberate agricultural decision rather than a natural fact.