Quebracho Colorado
Scientific name: Schinopsis quebracho-colorado
Overview
Quebracho Colorado is one of South America’s most famous hardwoods, renowned for its extraordinary density, remarkable durability, and rich reddish heartwood. Native to the Gran Chaco forests of Argentina, Paraguay, Bolivia, and portions of Brazil, it belongs to the Anacardiaceae family and is closely related to Red Quebracho (Schinopsis balansae), Santiago Quebracho (Schinopsis lorentzii), and the other members of the Schinopsis genus.
The name Quebracho Colorado combines the Spanish words quiebra hacha (“axe breaker”) with colorado (“reddish-colored”), describing both its legendary hardness and its distinctive red-brown heartwood. Historically, it became one of the most valuable timber species in South America due to its exceptional structural properties and its high concentration of tannins, which were extensively used by the leather tanning industry.
Quick Facts
- Common Name: Quebracho Colorado
- Scientific Name: Schinopsis quebracho-colorado
- Region: South American Hardwoods
- Tree Size: 50–80 ft (15–24 m) tall, 2–4 ft (0.6–1.2 m) trunk diameter
- Average Dried Weight: Approximately 75 lbs/ft³ (1,200 kg/m³)
- Janka Hardness: Approximately 4,570 lbf
- Grain: Interlocked to irregular
- Texture: Fine to medium
Identification Characteristics
Quebracho Colorado develops a heartwood ranging from deep reddish-brown to dark brick red, gradually darkening with age and exposure. The sapwood is narrow and pale cream to grayish-white, providing a sharp contrast with the heartwood. The grain is usually interlocked or irregular, while the texture is fine to medium with a naturally low luster. The wood is exceptionally dense, heavy, and rich in tannins, making it one of the most durable commercial hardwoods in the world.
Key identification traits include:
- Deep reddish-brown to brick-red heartwood
- Narrow cream to grayish-white sapwood
- Interlocked or irregular grain
- Fine to medium texture
- Extremely dense and heavy
- High natural tannin content
- Outstanding resistance to decay and insects
Working Properties
Quebracho Colorado is extremely challenging to machine due to its exceptional hardness and density. Carbide tooling is essential, as cutting edges dull rapidly. Interlocked grain may produce tear-out during planing, while pre-drilling is necessary before driving screws or nails. Despite these machining challenges, finished products exhibit extraordinary durability and wear resistance.
- Extremely difficult to machine
- Rapidly dulls cutting tools
- Carbide tooling recommended
- Interlocked grain may produce tear-out
- Pre-drilling recommended
- Turns with difficulty
- Produces exceptionally durable finished products
Safety Note
Wood dust may cause skin, eye, or respiratory irritation in sensitive individuals. The wood’s high tannin content may also contribute to skin irritation after prolonged exposure. Proper dust collection, respiratory protection, and eye protection should be used whenever machining or sanding this species.
Common Uses
Thanks to its incredible hardness, exceptional strength, and outstanding natural durability, Quebracho Colorado is used for numerous heavy-duty applications, including:
- Railroad ties
- Bridge timbers
- Heavy construction
- Industrial flooring
- Fence posts
- Utility poles
- Mining timbers
- Marine construction
- Agricultural equipment
- Tannin extraction
Sustainability & Notes
Quebracho Colorado played a major role in South America’s timber industry throughout the late nineteenth and early twentieth centuries. Large areas of the Gran Chaco were harvested to supply railroad expansion, industrial construction, and leather tanning operations.
Today, much of the remaining resource is managed under improved forestry practices, although habitat loss from agriculture and land conversion continues to affect portions of its native range. Sustainable harvesting and responsible forest management remain essential for conserving this iconic hardwood.
Comparative Notes & Related Species
Red Quebracho – Nearly identical in appearance and properties, with both species prized for exceptional density and high tannin content.
Santiago Quebracho – Another highly durable member of the Schinopsis genus commonly used for heavy structural applications.
Horned Quebracho – A rare relative that shares similar density, durability, and interlocked grain but is far less common in commercial trade.
Related Guides
Quebracho Species Guide – Compare the various quebracho species and learn how they differ in distribution, appearance, and woodworking characteristics.
Best Woods for Outdoor Use – Explore naturally durable hardwoods used for exterior construction and demanding environments.
Understanding CITES & Protected Species – Learn how conservation regulations help protect valuable hardwood resources around the world.
Compare Wood Properties
See how this species ranks in density and hardness using our Wood Density & Janka Hardness Chart. You can also explore Hardest Woods, Softest Woods, and Most Dense Woods for quick comparisons.
Collector Notes
Quebracho Colorado is one of the most historically significant hardwoods from South America and is an outstanding addition to any documented wood collection. Its tremendous weight, rich reddish coloration, and long history in railroad construction and leather tanning make it one of the most recognizable members of the Schinopsis genus. Displaying it alongside Red Quebracho, Santiago Quebracho, Chaco Quebracho, Quebracho Serrano, Boquerón Quebracho, Quebracho Blanco, and Horned Quebracho provides an excellent comparison of one of the world’s most impressive hardwood groups.
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Wood Sample Collection
This species is part of an ongoing effort to document and preserve wood samples from around the world.
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Resources
Authoritative botanical and forestry references used in compiling information about this species include:
• USDA Forest Service – Wood Handbook: Wood as an Engineering Material
https://www.fpl.fs.usda.gov/products/publications/
• The Wood Database – Global reference for wood identification, physical properties, and woodworking characteristics
https://www.wood-database.com/
• Royal Botanic Gardens, Kew – Plants of the World Online – Botanical taxonomy and species distribution database
https://powo.science.kew.org/
• International Union for Conservation of Nature (IUCN Red List) – Global conservation status assessments
https://www.iucnredlist.org/
• Convention on International Trade in Endangered Species (CITES) – International trade regulations for protected plant species
https://cites.org/
Additional forestry publications, academic research papers, and regional timber studies may also be referenced where available.
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