Yunnan Da Ye Zhong

The large-leaf assamica population of Yunnan, and the raw material for both pu-erh and Dian Hong. Old, unpruned trees within this population — gu shu — are the basis of the most expensive sheng pu-erh, and the age claims attached to them are largely unverifiable by a buyer.

雲南大葉種Camellia sinensis var. assamicaChinaAlso called Yunnan large-leaf

Where it sits in the botany

Yunnan Da Ye Zhong is recorded under Camellia sinensis var. assamica, the variety group one level above cultivar. It is associated with China, which is where it was selected or is most widely planted rather than the only place it grows.

Also transliterated as: da ye zhong, yunnan daye zhong.

What the plant is like

Very large leaves, high in the compounds that make young sheng bitter and that later provide the substance for decades of ageing. The same material makes a notably sweet, thick black tea when fully oxidised.

Why a grower plants it

Yield, hardiness, when it buds, what it resists and whether a machine can cut it. This is the half of a cultivar’s identity that decides what is actually in the ground, and it is usually left out of writing aimed at drinkers.

This is a population, not a clone, and the agronomy splits accordingly. Seed-grown trees left tall and widely spaced — the material sold as gu shu or as arbour tea — root deeply, need little or no irrigation and no fertiliser, yield very little per tree and are picked by climbing. Terraced plantation land planted with selected clones out of the same large-leaf stock, principally Yunkang 10, yields several times as much per hectare, flushes more often and is picked standing up. Both are correctly called Yunnan Da Ye Zhong, they cost an order of magnitude apart, and no label is obliged to say which one it is.

What it does in the cup

Young sheng from it is bitter and astringent up front with a strong returning sweetness and a thick, oily mouthfeel; the same leaf fully oxidised as Dian Hong is sweet, malty and heavy with a cocoa register. The large leaf's higher extract is why both versions taste substantial rather than delicate.

How much of this is really the cultivar?

For pu-erh the cultivar question is nearly the whole marketing story and nearly none of the tasting one. What separates two sheng cakes is village and plot, tree age and picking standard, then the kill-green and drying, then storage — and storage in particular, over ten years, moves a tea further than any plant difference ever could. Age claims about the trees are the least verifiable assertion in tea and carry the highest price multiple; TeaHQ records the claim, not the tree. The one genuinely cultivar-level statement worth making is the botanical one: this is assamica, its higher extract is why sheng is bitter young and why it has something left to become.

Cultivar, growing site and processing all shape a cup, and the cultivar is very often the smallest of the three. It is also the one that fits on a label, so almost every commercial incentive runs toward overstating it. This section is on every cultivar page that has been reviewed for it, including the ones where the honest answer is “less than you would think”.

What it is usually made into

The categories this cultivar is typically processed into. It is a statement about common practice, not a limit — processing decides the category, and a cultivar can be taken down more than one route.

Dark tea and pu-erh — Teas changed after processing by microbial activity — either deliberate wet-piling or long, slow ageing.
Black tea — Tea taken deliberately through full enzymatic oxidation, giving the dark leaf, amber-to-red liquor and malty or brisk character most Western drinkers think of as simply 'tea'.
White tea — The least handled category: withered and dried, with no fixation and no deliberate rolling.

Teas in the catalogue made from Yunnan Da Ye Zhong

Sources

TeaHQ editorial synthesis — TeaHQ

This page is TeaHQ’s own synthesis throughout. No breeding register or institutional record stands behind the account above, which is why the origin note carries its confidence in the open rather than reading as a citation.

How TeaHQ handles sources

Written comparisons

Where TeaHQ has set this cultivar against something it is routinely confused with, and argued the differences out in full.

Shan Tuyết vs Yunnan Da Ye Zhong — Two large-leaf stocks on either side of the same mountain system. Northern Vietnam’s ancient tea trees and Yunnan’s are continuous country botanically, and the difference in what reaches a drinker is a difference of industry rather than of plant.
Yunnan Da Ye Zhong vs Menghai Da Ye vs Yunkang 10 — The plant material behind pu-erh, and the distinction that the ‘old arbour against plantation’ argument is actually about. One is a mixed old population, one is the selected large-leaf stock of the manufacturing heartland, and one is the high-yielding clone planted on terraces from the 1980s.