The Thai forest tradition (phra pa) is a monastic reform movement that began in north-east Thailand in the early twentieth century, restored meditation to the centre of Theravada practice, and — through a handful of Western students in the 1970s — became the source of most serious Theravada monasticism in Europe, North America, and Australasia.

It is also the tradition that produced the most influential Theravada teacher of the twentieth century for Western practitioners, and the one whose lineage has been most visibly strained by the bhikkhuni ordination question.

The background #

By the nineteenth century, Thai monasticism was overwhelmingly settled, town-based, and oriented towards study, ceremony, and the provision of ritual services. Meditation was a minority pursuit and, in some quarters, held to be futile in the present degenerate age.

The reform had two strands. King Mongkut’s Thammayut order, founded in the 1830s, was a top-down textual reform emphasising Vinaya strictness and scriptural accuracy. The forest movement was something else: a bottom-up return to the wandering ascetic life the Vinaya describes, undertaken by monks who went into the forests of Isan and along the Mekong to practise.

Ajahn Mun #

Ajahn Mun Bhuridatta (1870–1949) is the founder in the sense that everything descends from him.

Born in Ubon Ratchathani in the poor north-east, he ordained, took up the dhutanga ascetic practices, and spent decades wandering in the forests of Thailand, Laos, and Burma — living under trees and in caves, eating one meal a day from alms, and practising intensively. He taught by example and by terse instruction, and left almost nothing written; what survives comes through his students, principally Ajahn Maha Boowa’s biography.

His characteristic method combined buddho as a meditation word with breath awareness, and an unsparing investigation of the body. His reputation spread, students gathered, and by his death the movement was substantial.

Its geography matters. Isan is Thailand’s poorest region, culturally Lao, and peripheral to Bangkok. The forest tradition began at the margins and was regarded with suspicion by the metropolitan ecclesiastical establishment for decades before being absorbed into national respectability.

The dhutanga practices #

The forest monks took up the thirteen optional ascetic observances the Vinaya permits:

Wearing robes made from discarded cloth; possessing only three robes; eating only alms food; not omitting houses on the alms round; eating one meal a day; eating only from the alms bowl; refusing food after the meal has begun; dwelling in the forest; dwelling at the root of a tree; dwelling in the open; dwelling in a charnel ground; being content with any dwelling assigned; and not lying down — sleeping seated.

Not all are taken by all monks, and the specific combination varies. The point of them is not mortification, which the Buddha rejected, but the removal of the conditions under which the mind settles into comfort and dispersal.

Charnel-ground practice deserves a note: meditation in cremation grounds, on corpses, and on the body’s decomposition is a canonical practice with a long history, and the forest tradition revived it. Its purpose is the direct perception of impermanence and the loosening of identification with the body.

Ajahn Chah #

Ajahn Chah Subhatto (1918–1992) is the reason the tradition is known in the West.

Also from Ubon, he trained under Ajahn Mun briefly and then wandered for years before settling at Wat Pah Pong in 1954. His teaching style was direct, humorous, and relentlessly practical — full of similes about water buffalo, snakes, and glasses that are already broken. He was largely uninterested in Abhidhamma technicality and in maps of attainment.

His characteristic emphases: the whole of life as practice rather than only the sitting; patient endurance; Vinaya as training rather than as ritual purity; and a persistent refusal to let students make the practice into a project of acquisition.

In 1975 he established Wat Pah Nanachat, the International Forest Monastery, specifically for foreign monks who could train in English. This decision is why the tradition travelled.

The Western lineage #

Ajahn Chah’s Western students established monasteries that are now among the most substantial Buddhist monastic institutions outside Asia.

Ajahn Sumedho (b. 1934), an American, was Chah’s first long-term Western student and the first abbot of Wat Pah Nanachat. In 1977 he went to Britain at the invitation of the English Sangha Trust and established Cittaviveka (Chithurst) in 1979 and Amaravati in 1984. The British branch monasteries now include several others, and there are affiliated monasteries in Italy, Switzerland, New Zealand, Canada, and the United States.

Ajahn Pasanno and Ajahn Amaro established Abhayagiri in northern California in 1996.

Ajahn Brahm (b. 1951), a Cambridge-trained theoretical physicist, established Bodhinyana in Western Australia and is among the most widely read contemporary Theravada teachers, particularly on jhana.

Thanissaro Bhikkhu (b. 1949) trained under Ajahn Fuang, a student of Ajahn Lee in a parallel forest lineage, and founded Metta Forest Monastery in California. His translations — most of the Pali canon, freely available — are among the most-used English versions.

The 2009 rupture #

In 2009, Ajahn Brahm presided over the full ordination of four women at Bodhinyana. The response from the Wat Pah Pong lineage was immediate: the monastery was expelled from the Ajahn Chah forest sangha.

The stated grounds were procedural — that the ordination was invalid under the Theravada Vinaya and had been conducted without the lineage’s consent. The substantive question is set out in Bhikkhuni Ordination and Its Revival.

The episode divided the Western forest community and remains unresolved. Ajahn Brahm has continued to support bhikkhuni ordination; the Wat Pah Pong lineage has not changed its position; and the British branch monasteries adopted a “five points” statement in 2009 reaffirming the subordination of nuns (siladhara) to monks, which prompted several nuns to disrobe or leave.

It is the clearest recent case of a lineage’s institutional commitments and its ethical commitments pulling in different directions, and an honest account of the tradition has to include it.

The practice #

Forest tradition practice is recognisably Theravada with distinctive emphases.

Concentration is taken seriously. In contrast to the “dry insight” Burmese methods, the forest tradition generally holds that deep samatha is the proper foundation for insight. Ajahn Brahm’s teaching on jhana is the most systematic modern statement of this position.

The body is the primary object. Breath, postures, the thirty-two parts, the decomposition contemplations.

Vinaya is central. Not as legalism but as the container: the rules structure a life in which the mind can settle.

Monastic life is the frame. The forest tradition is a monastic tradition, and its Western branches maintain full monastic form — alms rounds, one meal a day, no handling of money — in societies not organised to support it.

Simplicity over technique. The tradition produces relatively few technical manuals and a great deal of talk about attitude, patience, and letting go.

Common questions #

Can laypeople practise in this tradition? Yes. The monasteries run retreats, accept lay guests, and have substantial lay communities. The tradition’s centre of gravity is nonetheless monastic, which distinguishes it from the lay-led Western insight movement.

Is it the same as vipassana? It is Theravada insight practice, but it is not the Mahasi or Goenka method. The differences are real: more emphasis on concentration, less on noting, and a monastic rather than retreat-centre setting.

How do Western forest monasteries survive? On donations, as the Vinaya requires. Monks do not handle money, do not cook, and eat what is offered. That this works in Britain, California, and Australia is one of the more surprising facts about modern Buddhism.

Where should I start reading? Ajahn Chah’s talks, collected in Food for the Heart, are the standard entry point and are freely available online, as is most of the tradition’s literature — forest monasteries generally do not sell books.

Is the tradition declining in Thailand? Deforestation has removed much of the forest, and the monasteries that remain are frequently surrounded by farmland. Several forest communities now function as conservation holdings, and the monks’ role in protecting remaining forest has become a real one.

Sources & further reading #

Ajahn Chah, Food for the Heart (Wisdom, 2002) — the collected talks; freely available from the forest monasteries. Kamala Tiyavanich, Forest Recollections: Wandering Monks in Twentieth-Century Thailand (University of Hawai’i Press, 1997) — the standard historical study. Ajahn Maha Boowa, Venerable Ācariya Mun Bhūridatta Thera: A Spiritual Biography, trans. Bhikkhu Dick Silaratano (Forest Dhamma, 2003). Ajahn Sumedho, The Sound of Silence (Wisdom, 2007). Ajahn Brahm, Mindfulness, Bliss, and Beyond (Wisdom, 2006).