Qing Xin

The dominant cultivar of Taiwanese high-mountain oolong and the material behind most of the island’s most expensive tea. It is difficult to grow — susceptible to disease and low-yielding — and is planted anyway because nothing else gives the same combination of thickness and floral clarity.

青心烏龍Camellia sinensis var. sinensisTaiwanAlso called Chin ShinAlso called Luanze

Where it sits in the botany

Qing Xin is recorded under Camellia sinensis var. sinensis, the variety group one level above cultivar. It is associated with Taiwan, which is where it was selected or is most widely planted rather than the only place it grows.

Also transliterated as: qing xin, chin shin, qingxin oolong.

What the plant is like

Low yield and weak disease resistance, against a thick, sweet, gardenia-scented cup with a marked cooling finish. Almost all Alishan, Li Shan and Da Yu Ling tea is Qing Xin.

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.

A difficult plant kept in the ground by price. It yields poorly, roots shallowly, is susceptible to root rot and to blister blight, and does badly in heat and humidity — which is the awkward part, because Taiwan is hot and humid. The resolution is altitude: above roughly a thousand metres the cooler nights, the slower growth and the lower pest pressure suit it, and its weaknesses cost less. That is why the high-mountain oolong category and this cultivar are almost the same subject. Down at low elevation the same plant is unremarkable and mostly not worth the trouble, which is where Jin Xuan and Si Ji Chun took the ground instead.

What it does in the cup

Thick and sweet with a gardenia-to-osmanthus floral aroma and a cooling, faintly menthol finish that carries a long way after swallowing. The mouthfeel is the part experienced drinkers describe first — a viscosity that survives many infusions.

How much of this is really the cultivar?

This is the strongest cultivar case in the catalogue and it still has to share. Qing Xin's floral profile is genuinely reproducible enough that a blind taster can often place it, and substitute cultivars do not sound the same. But nearly everything Taiwanese high-mountain oolong is sold on — the thickness, the cooling finish, the length — is at least as much altitude and picking standard as plant, and the same Qing Xin grown at three hundred metres demonstrates that plainly. The clearest evidence sits inside the category: Qing Xin from Li Shan and Qing Xin from Dong Ding are different teas, and the plant is the constant.

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.

Oolong — Partially oxidised teas, bruised deliberately and often roasted — the widest-ranging category in tea.

Teas in the catalogue made from Qing Xin

Other cultivars in Camellia sinensis var. sinensis

Guides covering this cultivar

When a country plants one cultivar — Japan’s planted area is dominated by a single cultivar to a degree unusual in any crop. Several other producing countries are in a milder version of the same position, and it is discussed as a strategic problem rather than only an agronomic one.

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.

Qing Xin vs Jin Xuan — The two cultivars behind most Taiwanese oolong, planted for opposite reasons. Qing Xin is difficult, low-yielding and grown anyway because nothing else gives the same combination of thickness and floral clarity; Jin Xuan is easier, hardier and has a signature of its own.
Qing Xin vs Qing Xin Da Mao — Two Taiwanese cultivars with nearly the same name and completely different jobs. One makes high-mountain oolong; the other was selected because the tea jassid readily bites it, which is what makes Oriental Beauty possible.
Si Ji Chun vs Qing Xin — The cheapest way to imitate high-mountain character and the plant that actually produces it. Si Ji Chun flushes almost year-round at low elevation and carries a strong lilac aroma; that aroma is regularly sold as altitude.
Wuyi (Taiwan) vs Qing Xin for Baozhong — Northern Taiwan’s Wenshan district makes the island’s lightest oolong, and it makes it from two plants that pull in slightly different directions. The Taiwanese cultivar called Wuyi is unrelated to the Fujian mountain of the same name, and it is the traditional Baozhong plant.
Yabukita vs Qing Xin — Two cultivars that dominate their countries for opposite reasons, and the pair that shows what a national industry optimises for. Yabukita was planted everywhere because it is dependable; Qing Xin is planted despite being difficult, because nothing substitutes for it.
Ying Xiang (No. 20) vs Qing Xin — A bred cultivar against the plant it was bred to relieve. Qing Xin makes almost all of Taiwan’s famous high-mountain oolong and is low-yielding and disease-prone; Ying Xiang offers more vigour and more aroma across a wider range of elevations, and the trade has not adopted it in Qing Xin’s place.