Green-Heart

A legendary structural hardwood known for unmatched strength, durability, and marine performance.

Common Name(s): Greenheart, Demerara Greenheart

Scientific Name: Chlorocardium rodiei

Distribution: Guyana, Suriname, Northern Amazon Basin

Green‑Heart is one of the strongest and most durable hardwoods in the world, renowned for its exceptional resistance to decay, marine borers, and heavy structural stress. Native to Guyana and the northern Amazon region, it has been used for centuries in bridges, wharves, piers, and industrial applications where long‑term performance is critical. Its density, stability, and natural durability make it a premier choice for demanding environments, especially in marine and freshwater construction.

Key Attributes

Appearance

Colour

Olive‑green to dark greenish‑brown

Grain

Straight to interlocked

Texture

Fine, uniform texture

Density

Extremely heavy

Performance

Workability

Difficult (high density + silica)

Durability

Exceptional (marine-grade)

Stability

Good dimensional stability

Technical Information

Property	Value
Janka Hardness	3,190 lbf
Modulus of Rupture	22,000–25,000 psi
Modulus of Elasticity	2,200,000 psi
Density	1,050 kg/m³ (65–66 lb/ft³)
Crushing Strength	11,500 psi
Shrinkage (Radial)	4.0%
Shrinkage (Tangential)	7.5%
Shrinkage (Volumetric)	11.5–12%
T/R Ratio	1.8–1.9
Workability	Difficult (high density + silica)
Planing	Fair, with sharp tools
Sanding	Good
Finishing	Excellent — accepts oils and varnish well
Stability	Good dimensional stability
Durability	Excellent
Moisture Movement	Low–Moderate