TeaHQ

Si Ji Chun

A Taiwanese cultivar that flushes almost year-round, giving it its name. It carries a strong lilac-like floral aroma at low elevation, which makes it the cultivar behind most inexpensive Taiwanese oolong and a great deal of bubble-tea base.

四季春Camellia sinensis var. sinensisTaiwanAlso called Four Seasons Spring

Where it sits in the botany

Si Ji Chun 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: si ji chun, sijichun.

What the plant is like

Its aroma is often mistaken for high-mountain character. Elevation and cultivar are different things, and Si Ji Chun is the cheapest way to imitate one with the other.

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.

The most productive plant in the Taiwanese catalogue and the one whose economics are easiest to state. It flushes five or six times a year against three or four for Qing Xin, tolerates heat, humidity and low elevation, resists disease well, and takes mechanical harvesting — so it produces far more kilograms per hectare per year at a far lower labour cost. Everything about it points at the low-elevation, high-volume end, which is where it went, and it is now a large share of the leaf behind cheap Taiwanese oolong and the tea base of the bubble-tea trade in Taiwan and Vietnam.

What it does in the cup

A loud lilac-and-gardenia floral aroma that arrives immediately and does not last many infusions, over a thin-to-moderate body with little of the thick mouthfeel or cooling finish of high-mountain material. It is aromatic rather than deep, and it is very good value for what it is.

How much of this is really the cultivar?

Si Ji Chun is the catalogue's sharpest demonstration that cultivar and terroir are separable and are routinely conflated on purpose. Its aroma reads as 'high mountain' to a drinker who has learned to associate floral intensity with altitude, and it grows at two hundred metres. What altitude actually buys is thickness, sweetness and a long cooling finish, none of which this plant supplies. So a cheap floral Taiwanese oolong is usually not a badly made high-mountain tea; it is a different cultivar grown somewhere else, doing an impression. Judge the mouthfeel and the finish rather than the top note.

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 Si Ji Chun

Other cultivars in Camellia sinensis var. sinensis

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.

  • 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.