High; the combination of the specific grayish-blue fungal staining, small dark-rimmed knots, and light yellowish softwood grain is diagnostic for beetle-killed Pine. confidence

Ponderosa Pine (Beetle-killed/Blue Stain Pine)

Pinus ponderosa · Softwood

Type: Softwood
Origin: Western North America, particularly the Rocky Mountain regions and Pacific Northwest.
Hardness: 460 lbf (Very Soft)
Durability: Slightly Durable to Non-durable; low resistance to rot and fungal decay once harvested, though staining does not affect structural integrity.

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Grain Pattern

Generally straight with uneven texture; features cathedral grain and numerous small tight knots. The sample exhibits flat-sawn characteristics with significant fungal staining.

Color & Appearance

Natural heartwood is reddish-brown, while sapwood is yellowish-white. This sample is characterized by blue-gray to denim-colored streaks caused by the mountain pine beetle-associated fungus (Grosmannia clavigera).

Hardness (Janka)

460 lbf (Very Soft)

Durability & Decay Resistance

Slightly Durable to Non-durable; low resistance to rot and fungal decay once harvested, though staining does not affect structural integrity.

Value & Sustainability

Estimated Market Value: $3.00 - $6.00 per board foot (varies by the intensity of the blue stain figure).
Wood Age Estimate: Modern (less than 10 years); the fresh appearance of the knots and lack of deep oxidation suggest recent harvest and processing.
Sustainability Status: Least Concern (IUCN); widely available and often harvested as part of forest management/fire mitigation due to beetle infestations.

Common Uses

Paneling, rustic furniture, cabinetry, interior trim, pallets, and decorative woodworking where the blue staining is aesthetically desired.

Geographic Origin

Western North America, particularly the Rocky Mountain regions and Pacific Northwest.

Workability

Easy to work with both hand and machine tools. Responds well to glue and finishes, though resin/pitch pockets can occasionally gum up blades.

Finish Recommendations

Clear satin polyurethane or lacquer to preserve and highlight the blue staining. A sanding sealer is recommended to prevent uneven absorption due to varying density.