Acacia: Cambodia's Sustainable Hardwood for Modern Furniture
Acacia is Cambodia's sustainable hardwood. Learn its properties, sourcing, and why we use PEFC-certified plantation timber for furniture
WOOD TYPES
Acacia: Cambodia's Sustainable Hardwood for Modern Furniture
If you have driven through Kampong Speu or Kampong Cham, you have seen them. Rows of fast-growing trees on land that was once cleared forest, planted in straight lines, harvested on short cycles. These are Acacia plantations, and they are quietly becoming one of the most important sources of legal, sustainable timber in Cambodia. While the country's luxury hardwoods are protected and increasingly difficult to source legally, Acacia offers something different: a genuinely sustainable hardwood that is widely available, plantation-grown, and PEFC certified. It is not rosewood. It does not pretend to be. But it is hard, workable, and honest, and for many furniture applications it does the job beautifully.
What Is Acacia?
Acacia is not a single species but a genus of over a thousand trees and shrubs found across Australia, Africa, Asia and the Americas. The commercial timber sold as Acacia typically comes from species such as Acacia mangium, Acacia mearnsii, and Acacia confusa. In Cambodia, the most commonly planted species for commercial timber is Acacia mangium, a fast-growing tree native to Australia and Papua New Guinea that thrives in tropical climates. The heartwood colour ranges from light golden brown to deep reddish-brown, often with contrasting streaks between sapwood and heartwood. The grain is interlocked, giving each piece a dynamic appearance. The wood darkens slightly with age and exposure to light.
The Numbers Behind Acacia Wood
The Janka hardness of Acacia varies significantly depending on the species. Acacia mangium measures 1,430 lbf (6,340 N). Acacia mearnsii, known as Black Wattle, measures 1,710 lbf (7,590 N). Commercially graded Acacia sold for furniture commonly measures around 2,200 lbf. The average dried weight for Acacia mangium is 585 kg/m³, while Acacia mearnsii is denser at 730 kg/m³.
For shrinkage, Acacia mangium shrinks approximately 2.8 percent radially and 7.8 percent tangentially, giving a volumetric shrinkage of 10.7 percent and a T/R ratio of 2.8. Acacia mearnsii shrinks 3.1 percent radially and 7.0 percent tangentially, with a volumetric shrinkage of 10.2 percent and a T/R ratio of 2.3.
For a furniture buyer, these numbers describe a hardwood that is harder than oak, comparable in many species to teak, and stable enough for interior use when properly dried. The T/R ratio around 2.3 to 2.8 indicates the wood will move predictably during drying, though it requires careful kiln control to avoid cupping. The density means it resists dents and scratches well, making it suitable for dining tables, chairs, and high-traffic surfaces. It is not as dense or as hard as Thnong or the rosewoods, but it is far more available and entirely legal.
Sourcing and Sustainability of Acacia in Cambodia
This is where Acacia stands apart from Cambodia's luxury timbers. Acacia is plantation-grown, not harvested from wild forests. Cambodia has a growing Acacia plantation sector, with companies like CamAgra Investment Group managing 8,000 hectares of Acacia plantations in a fully integrated operation that runs from seedling to finished product. CamAgra is PEFC certified, meaning its timber meets international standards for sustainable forest management, legality, and traceability. The company produces up to 500,000 Acacia seedlings per month and operates a self-contained cycle of propagation, harvesting, processing, and manufacturing.
Acacia is not listed on CITES and is not on the IUCN Red List of Threatened Species. It is fast-growing, easy to manage from a silvicultural perspective, and well-suited to Cambodia's climate and soil conditions. The country's expanding base of fast-rotation species, notably Acacia and Eucalyptus, offers strong potential for scalable production of plywood, veneer, pulp, and biomass. In a market where legal luxury timber is increasingly difficult to verify, Acacia offers something valuable: a documented, certified, legal source of hardwood.
Is Acacia Wood Good for Furniture?
Yes, with two conditions. First, it must be properly dried. Acacia is quick-drying but can experience cupping and warping if the process is rushed. Kiln-dried Acacia, brought to the correct moisture content, is stable in service. Second, it must be sealed. Acacia heartwood is rated as non-durable regarding decay resistance, meaning it has poor natural resistance to insects and fungal attack. A well-sealed piece will last for decades indoors. An unsealed one will not. In Cambodia's humidity, the finish is protection, not decoration.
Acacia is good for indoor dining tables, coffee tables, chairs, cabinets, flooring, and decorative pieces. It is also suitable for outdoor furniture when treated with appropriate sealants and oils, though prolonged exposure to direct sun and heavy rain will degrade the surface without regular maintenance. It is not ideal for structural applications requiring high load-bearing strength, nor for pieces exposed to standing water.
How Acacia Compares to Other Trees
Compared to Teak, Acacia is harder and more affordable. Teak has natural oils that repel insects and moisture, making it superior for outdoor use without treatment. But for indoor furniture, Acacia offers comparable durability at a lower price and from a genuinely sustainable source. Compared to Rubberwood, Acacia is significantly harder and denser. Rubberwood is easier to work and more affordable, but it dents more easily. Acacia is the better choice for surfaces that will take heavy use. Compared to the endangered Cambodian hardwoods like Thnong or Beng, Acacia lacks their legendary density and deep rosewood colour. But it has something those woods cannot offer: it is legal, documented, and renewable. For buyers who want a beautiful piece without the ethical burden, Acacia is the responsible choice.
How We Work With Acacia
Khmer Wood Design uses Acacia for pieces where hardness and sustainability matter more than exotic colour. We source from PEFC-certified plantations where possible, and we kiln-dry to the correct moisture content for Cambodia's climate. Every surface is sealed, including undersides and the insides of drilled holes, so humidity cannot enter unevenly. Offcuts become Collectibles & Curios — ornaments, coasters, small wall pieces. Sawdust goes to local farms for composting. Nothing usable is thrown away. Acacia is not a luxury wood in the traditional sense, but it is an honest one, and we treat it with the same respect we give every timber in our workshop.
Care and Maintenance of Acacia Hardwood
Clean Acacia with a soft, dry cloth. For sticky spots, use a barely damp cloth with mild soap, then dry immediately. Avoid abrasive cleaners, ammonia, and prolonged direct sunlight. Use coasters and felt pads under objects that might scratch. For oiled finishes, re-oil once or twice a year with linseed or tung oil to replenish moisture and prevent cracking. For sealed finishes, occasional cleaning is sufficient. One specific warning: Acacia is photosensitive and will darken over time. This is not damage — it is the wood's natural patina developing. If you want to slow the process, keep the piece away from direct sunlight.
Sustainable Alternatives
If you want a piece that is hard, durable, and genuinely sustainable, Acacia is one of the best choices available in Cambodia today. It is not rosewood. It does not claim to be. But it is legal, certified, plantation-grown, and beautiful in its own right. We can finish it to evoke warmer or darker tones, and we can pair it with reclaimed timber for pieces that tell a more complex story. Contact us to discuss a commission in Acacia or any of the other sustainable timbers we work with.
FAQs
Is Acacia a hardwood? Yes. Acacia is classified as a hardwood. Its density and hardness vary by species, but all commercial Acacia species are harder than many common furniture woods.
Is Acacia sustainable? Yes. Acacia is plantation-grown, fast-growing, and not listed on CITES or the IUCN Red List. PEFC-certified Acacia plantations in Cambodia. Khmer Wood Design offer a documented, legal, and renewable source of timber.
Does Acacia warp? It can warp during drying if the process is rushed. Kiln-dried Acacia is stable in service. The key is proper drying and sealing.
Is Acacia good for outdoor furniture? It can be, with treatment. Acacia has natural oils that help resist moisture, but it is rated as non-durable without protection. Outdoor pieces should be oiled or sealed regularly.
What is a sustainable alternative to rosewood in Cambodia? Acacia and Rubberwood are both plantation-grown, widely available, and legal. Acacia is harder and denser. Rubberwood is lighter and more affordable. Both are honest alternatives to endangered timbers.