Pasak Bumi: The Eurycoma Root of Borneo and Sumatra
Pasak bumi is the Indonesian name commonly used for Eurycoma longifolia, a tropical forest plant whose bitter root is prepared traditionally as a drink. The species is native to Borneo and Sumatra as well as parts of mainland South-East Asia. In West Kalimantan, it grows in the forest and is also used as a resource by rural communities. It is not a single village attraction, a cultivated plantation destination or a guaranteed item on a visitor’s route: the name refers to a plant and to a body of traditional knowledge.
What pasak bumi is, and where it grows
Eurycoma longifolia belongs to the Simaroubaceae family. Its native range covers the Malay Peninsula, Sumatra and Borneo, and extends north through mainland South-East Asia. “Pasak bumi” is a vernacular name, not a precise location or a guarantee that every product sold under that label came from a particular forest. The distinction matters when reading about the plant: the species has a wide range, while local knowledge and use belong to one place.
The Kalimantan connection includes Belaban Ella, a village in Menukung subdistrict, Melawi Regency, West Kalimantan. Residents there know pasak bumi and use parts of the plant in traditional preparations. In a West Kalimantan forest plot, naturally growing pasak bumi appeared in clusters rather than at even intervals. These local details establish a regional connection; they do not establish that Belaban Ella is the only source, that the plant is easy to find, or that visitors can enter collection areas.
For someone travelling through Kalimantan, this is best understood as a subject of forest ecology and living plant knowledge, not as a stop with a visitor centre or a marked trail. There is no dependable public route, distance from a transport hub or seasonal viewing period to give here. A wild plant may be known locally without being accessible to a casual visitor. Treating an ethnobotanical record as an invitation to search for or harvest the plant would confuse documentation with permission.
How to recognise the plant without mistaking the root trade for identification
Pasak bumi is a small tree or treelet, though people sometimes call it a shrub. Its foliage is distinctive in scale: the compound leaves can approach a metre in length and carry many leaflets arranged along a central stalk. The leaves tend to be concentrated towards the ends of the branches. Small flowers and developing fruits add useful identification clues, but these are not present in every season or on every individual. A dried root alone is not enough to identify a live specimen confidently.
That limitation matters because a name used in trade can travel farther than a plant. A bundle of dried pieces does not show the whole leaf, flowers, fruit or growth form. Nor does the name on a packet prove species identity, origin, harvest method or processing conditions. If botanical identification matters, for a collection or a garden, the most useful evidence is a plant with leaves and reproductive features, checked by a qualified person. Smell, bitterness and root appearance are not substitutes for that process.
The species is associated with tropical forest habitats and occurs in lowland settings, including primary and secondary forest. Site conditions vary, and a field result from one plot should not be converted into a universal habitat recipe. Measurements of soil, humidity, temperature and light in a West Kalimantan plot describe that particular place; they are not a promise that any patch of apparently similar forest contains pasak bumi.
Why the root is used and what traditional preparation means
The root is the plant part most often associated with the name in herbal use, although residents of Belaban Ella also use stem and leaf. Local preparation methods include boiling and steeping; leaves are also pounded for use. These are descriptions of local practice, not instructions that define a safe dose or establish that the resulting drink treats a disease. The article’s opening reference to dried root used in herbal drinks reflects this broad practice, but preparation differs by plant part and community.
“Brewed” can make the process sound uniform. It is not. A traditional decoction generally means plant material is simmered or boiled in water, while an infusion relies on steeping; the Belaban Ella account names both boiling and steeping without setting out one standard recipe for visitors. It does not provide a universally applicable quantity, duration, frequency or combination. Root chips, powder, extracts and mixed herbal drinks are also not interchangeable preparations. Differences in plant material and processing can change what enters the liquid.
The root’s pronounced bitterness is one reason it is recognisable, and the plant is associated with bitter local names in the wider region. But bitterness is a sensory quality, not a measure of strength, purity or benefit. Adding sweet ingredients can change how a drink tastes without making its contents more predictable. A traveller offered a traditional preparation can ask what plant part it contains and whether it is a single-plant drink or a blend, while recognising that answers do not independently verify botanical identity or medical safety.
In Belaban Ella, residents use pasak bumi for stamina, fever, malaria and skin complaints. These traditional uses they are not clinical proof that pasak bumi prevents or cures any of those conditions. Fever or suspected malaria requires prompt professional medical assessment, particularly in a forest region where a delay may matter. A bitter herbal drink should not replace diagnosis, prescribed treatment or urgent care.
Collection and regeneration in the forest
Pasak bumi’s root is the part sought for many traditional preparations, but taking a root from a wild plant can remove or kill the individual. That creates a practical tension between a valued forest product and the future supply of the plant. They nevertheless show why a small visible patch should not be read as limitless abundance.
This is a forestry measurement problem, not a field harvesting guide. Estimating root mass from above-ground dimensions does not reveal whether an individual can be harvested sustainably, whether the population is recovering, or whether local collection is authorised. A population with many seedlings can still be vulnerable if mature plants are repeatedly removed or if the habitat around them changes.
In Belaban Ella, residents harvest pasak bumi from plantation areas and forest using methods that involve levering and pulling. Some bring seedlings home to plant. These details help explain how plant knowledge meets everyday land use, but they should not be turned into do-it-yourself instructions. There is no established harvest quota, safe tool method for outsiders, legal right of access, or survival rate of transplanted seedlings to apply here. Asking before entering land and leaving roots undisturbed are sound boundaries for a visitor.
Domestication and planting may appear to offer a way to reduce pressure on wild roots, yet planting one seedling is not the same as establishing a reliable source. A cultivated plant needs appropriate conditions and time to grow; the figures here do not provide a visitor-ready cultivation schedule or a guaranteed yield. Nor does a cultivated label, by itself, prove that processed material came from cultivation. Provenance requires traceable records through harvest and processing, not an attractive origin story.
Names and lookalikes need careful handling
Pasak bumi and tongkat ali are both used for Eurycoma longifolia in the wider Malay-Indonesian region. Names can vary between languages and localities, and similar names may be applied to more than one plant. The words “putih”, “kuning” and “hitam” appear in regional naming for different-looking material, but colour labels on their own do not settle the species. A local vernacular name is valuable cultural information; it is not a substitute for a botanical specimen or a reliable supply chain.
This is why a page about a named root should not imply that every “pasak bumi” product has the same contents. A whole plant, a sliced root, a dried powder, a water extract and a capsule represent different levels of processing. An extract may be concentrated or standardised in ways that a household decoction is not. Evidence or safety conclusions about one particular extract cannot automatically be transferred to a cup made from unidentified roots—or the other way around.
Traditional use is not the same as established safety
Modern interest in pasak bumi often shifts quickly from local practice to promises about energy, hormones or sexual health. A long history of use does not, by itself, show that a modern supplement is effective or safe for every person. Product composition, dose, duration, other ingredients and a person’s health all matter. The useful distinction is simple: traditional use tells us how communities have used a plant; clinical and toxicological evidence must answer separate questions about effects and risk.
A 2021 assessment of a specific standardised water extract made from dried, ground root chips concluded that its safety had not been established under any condition of use, after test findings raised concern about DNA damage. That conclusion concerns the extract assessed and the evidence submitted for it. It does not mean every traditional preparation has been tested, and it should not be stretched into a numerical dose recommendation for a household drink.
The practical caution around overuse is therefore not a matter of inventing a safe limit. No general safe amount, schedule or maximum duration can be inferred from the community preparation account or from the separate extract assessment. People who are pregnant or breastfeeding, take medicines, have a health condition or are considering a concentrated supplement should seek advice from a qualified health professional before use. Do not use pasak bumi to delay care for fever, malaria symptoms or another serious illness.
What a visitor can reasonably take from the subject
If you encounter the name while travelling in Kalimantan, ask whether the conversation concerns a living plant, a traditional drink, a dried ingredient or a commercial extract. Each has a different answer to the questions of identification, preparation and evidence. A local explanation can tell you what a name means in that community; a botanical guide can help establish the species; neither alone certifies a packaged product or its health claims.
Do not plan a detour on the assumption that pasak bumi grows beside a road or can be viewed at a named attraction. Menukung, in Melawi Regency, is a village rather than a visitor site, with no tourist access route or visitor facility for the plant. If you are travelling independently, plan around established destinations and transport information, and treat any visit to working land or forest as something that needs local permission and appropriate guidance. The broader BaliGenie destinations hub helps place destination choices in a trip plan; it does not map wild plant populations.
For regional context, Kalimantan is part of the island of Borneo, which is shared by Indonesia, Malaysia and Brunei. The species’ broad range crosses political borders, while vernacular knowledge and harvesting practices remain local. A statement about one West Kalimantan community should not be assigned to all Dayak groups, all Kalimantan residents or neighbouring countries. When a figure is given for a village and subdistrict, retain that scale rather than turning it into a claim about an entire island.
When someone describes pasak bumi as “traditional medicine”, the phrase can cover very different practices. It may refer to a plant part, a preparation technique, an intended use, or knowledge passed through families. In Belaban Ella, knowledge of the plant is passed down, particularly among farmers. No single origin date or one recipe for every household is known. Respecting that distinction avoids flattening local practice into one standardised folklore story.
Readers planning wider Indonesian travel can use the Flores travel guide for a separate island and route context, while the practical travel hub gathers broader trip-planning information. These guides do not supply a route to a forest stand. For pasak bumi itself, the most useful takeaway is to keep three questions distinct: which plant is meant, what a particular community does with it, and what evidence supports a health claim.
Common questions about pasak bumi
Is pasak bumi a place in Kalimantan?
No. It is a common name for Eurycoma longifolia and for preparations made from the plant. The name is used in West Kalimantan, including in Belaban Ella and Menukung, Melawi Regency, but it does not designate a visitor site.
Does pasak bumi only grow in Kalimantan?
No. The species grows in Borneo and Sumatra and across parts of mainland South-East Asia. Kalimantan is one part of its range, not its sole home.
Is pasak bumi tea proven to treat malaria or fever?
Traditional uses of this kind describe what people have done, which is different from evidence that a drink treats the illness. Do not rely on it instead of professional diagnosis and treatment.
Can a visitor collect a root in the forest?
The research does not grant access or harvesting permission, and removing a root can damage or kill the plant. Do not collect plants from land or forest without explicit permission and appropriate local guidance.
For more on this area, see Kalimantan: Indonesian Borneo for Travellers From Bali.
Related guides: Museum Mulawarman in Tenggarong, nusantara capital city, kakaban lake, Forest Plants of Kalimantan: Timber, Latex, Rattan and Medicinal Species.