Region · in Thailand
Chiang Rai
Chiang Rai is where nearly all of Thailand's plantation tea grows, in a handful of border hills that are much easier to buy from once you can tell them apart. The province holds both Thai tea traditions within a few valleys of each other: Taiwanese-style rolled oolong on cleared upper slopes and old broad-leaf trees standing in forest that are worked for miang.
What grows here
Rolled oolong above all, from two hills that behave differently. Doi Mae Salong is the largest and best known, the Yunnanese-settled ridge whose village is officially named Santikhiri, and it is where most Thai export oolong is made. Wawee has old assamica trees standing among its planted rows, so a rolled oolong and a sun-dried leaf can honestly carry the same village name and have nothing in common.
The ground
The tea sits on the upper slopes, from roughly 1,200 m on Doi Mae Salong, high enough that the ridges hold fog into the morning while the valleys below are already hot. That vertical separation is what makes the province workable: the planted gardens take the cleared shoulders near the top, and the old trees are left standing in forest further down and around, so the two crops are neighbours in name and rarely in practice.
What to look for
The unit of provenance here is the hill, sometimes the village, almost never the garden. Treat Doi Mae Salong as a district and expect a wide range inside the name. If a Chiang Rai tea is sold on tree age or wildness rather than on the hill, it is being sold on the one claim nobody in the province can check.
Other places in Thailand
- Wawee
- Doi Mae Salong
- Chiang Mai
- Doi Tung