Tigerwood's sustainability profile is more complicated than a simple pass or fail. The species itself is not listed as threatened. The forests where it grows, however, include some of the most biologically significant and poorly overseen timber supply chains in the world. The difference between responsibly sourced tigerwood and unverified tigerwood is not visible in the wood grain — it requires documentation and a supplier willing to provide it.
This article explains the sourcing context, what certifications mean in practice, how to evaluate suppliers, and what alternatives exist for buyers who prefer not to navigate the tropical hardwood supply chain.
Where Tigerwood Comes From
Tigerwood (Astronium graveolens and related species) is native to tropical Central and South America, with Brazil accounting for the majority of the export volume reaching North American and European markets. Secondary supply comes from Bolivia, Peru, and parts of Colombia. Smaller volumes originate in Central American countries including Costa Rica and Guatemala.
Brazil's Amazon basin and Cerrado savanna are major tigerwood habitat areas. Both biomes have experienced significant deforestation pressure over the past three decades — from agricultural expansion, cattle ranching, and illegal logging. Brazil has formal forestry law (the Código Florestal) that requires forest management plans for commercial timber harvest, but enforcement has varied significantly by administration and region. Buying without certification verification means accepting that documentation of harvest legality may be absent or unverifiable.
What FSC Certification Means
Forest Stewardship Council (FSC) certification is the most widely recognized and credible standard for responsible forest management. For a tigerwood supplier to sell FSC-certified lumber, they must demonstrate:
- Legal authorization to harvest timber in the source region
- A forest management plan that maintains ecological function and does not deplete the resource
- Chain-of-custody documentation from forest to final sale
- Third-party auditing by an accredited certifier
FSC certification does not guarantee perfection — certifiers have been criticized for inconsistent auditing in difficult-to-access regions. But it represents a meaningful step above uncertified supply and is the standard that most responsible buyers and commercial projects specify.
When a supplier claims FSC certification for tigerwood, ask for the certificate number and verify it on the FSC certificate database (info.fsc.org). Certificate numbers are public and searchable. If a supplier cannot provide a certificate number, the claim cannot be verified.
PEFC and Other Certification Schemes
Programme for the Endorsement of Forest Certification (PEFC) is the other major international forest certification system. PEFC functions as an umbrella organization that endorses national certification programs. In Brazil, CERFLOR is the national system endorsed by PEFC. PEFC-certified tigerwood is less common in North American markets than FSC but represents comparable assurance when the certifying body is credible.
Some suppliers reference Brazilian government documentation — IBAMA certificates, SINAFLOR transport documents — as a substitute for third-party certification. These documents confirm legal harvest authorization in Brazil but are not equivalent to FSC or PEFC in terms of ecological management standards. Legal is not the same as sustainable.
Import Regulations: Lacey Act
The Lacey Act prohibits the import, export, purchase, and sale of illegally harvested plants, including timber. It applies to all wood products sold in the United States, including tigerwood decking and lumber. Reputable importers are required to make a declaration of species, country of harvest, and harvest authorization with U.S. Customs. The Lacey Act creates a legal baseline — reputable suppliers are compliant. Certification goes beyond compliance into positive ecological management standards.
Evaluating Suppliers
When sourcing tigerwood, evaluate suppliers on:
- FSC or PEFC certificate number (verifiable online, not just claimed)
- Species documentation confirming Astronium graveolens or A. fraxinifolium
- Country of origin specifically named at harvest region level, not just Brazil generically
- Moisture content specification (12–19% for properly kiln-dried decking stock)
- Willingness to provide documentation before purchase — suppliers resistant to documentation requests are a flag
For gardeners who have built other outdoor structures and are evaluating materials across multiple projects, the beginner's guide to sustainable gardening covers broader sourcing principles for garden materials beyond lumber specifically.
Domestic and Eco Alternatives
For buyers who prefer not to navigate tropical hardwood sourcing, several domestic alternatives deliver genuine outdoor durability without supply chain concerns:
- Black locust (Robinia pseudoacacia): A North American hardwood with natural durability rivaling ipe in many applications. Available from domestic suppliers with straightforward sourcing. Janka hardness around 1,700 lbf — close to tigerwood. Increasingly available as FSC-certified domestic lumber.
- White oak (Quercus alba): Durable in outdoor applications through tyloses formation that blocks moisture penetration. More widely available than black locust, excellent for above-grade raised beds and structures. Janka hardness around 1,360 lbf.
- Accoya: Radiata pine that has been acetylated — a non-toxic modification that dramatically improves durability. FSC-certified, dimensionally stable, and guaranteed for 50 years above grade by the manufacturer. More expensive than tigerwood but sourced from managed plantation forestry.
The guide to sustainable raised bed lumber covers both domestic and exotic options with sourcing notes, providing a complete reference for gardeners who prioritize ecological sourcing alongside performance.
Frequently Asked Questions
- Is tigerwood endangered or at risk?
- Astronium graveolens is not currently listed on the IUCN Red List as threatened or endangered. However, the biomes where it grows — including Brazilian Atlantic Forest and Cerrado — are themselves classified as globally significant biodiversity hotspots facing ongoing deforestation pressure. The species status and the ecosystem status are two different considerations.
- What does FSC Mixed Sources mean on tigerwood?
- FSC Mixed Sources indicates that a product contains a combination of FSC-certified material, post-consumer reclaimed material, or FSC Controlled Wood — material that meets a basic standard for legal harvest but is not fully certified. It is a lesser designation than FSC 100%. For tigerwood specifically, buyers concerned about sourcing should look for FSC 100% or at minimum ask the supplier what percentage of the product is FSC-certified material versus controlled wood.
- Can tigerwood be reclaimed or salvaged?
- Yes. Reclaimed tigerwood from demolition of decks, boardwalks, or structures is available through architectural salvage dealers in some markets. Reclaimed tigerwood eliminates new harvest concerns entirely and can be an economical source for small project quantities. The wood's density means it holds up through multiple use cycles remarkably well.
- Is composite decking more sustainable than tigerwood?
- Not simply. Premium composite decking is often made from recycled plastic and wood fiber, reducing virgin material demand. However, most composite decking is not recyclable at end of life and has a significant embodied carbon footprint from plastic manufacturing. Certified tigerwood from responsibly managed forests competes favorably on lifecycle sustainability analysis in several categories. The answer depends heavily on the specific composite product and the specific tigerwood source.