Spalted Silver Maple
Acer saccharinum • Hardwood
Grain Pattern
Generally straight to slightly wavy but heavily modified by fungal 'zone lines' (spalting); contains a small pin knot and subtle cathedral patterns from flat-sawing.
Color Description
Light blond to yellowish-tan heartwood and sapwood with distinct black or dark brown zone lines; shows grayish streaks due to early-stage decay and minor luster.
Hardness Rating
700 lbf (Soft to Medium-Soft); significantly reduced in areas with advanced spalting.
Durability Rating
Non-durable; poor resistance to decay and insects (the spalting itself is a form of fungal activity).
Common Uses
Luxury turning blanks, furniture accents, veneer, decorative bowls, and guitar tops.
Geographic Origin
Eastern and Central North America.
Market Value & Sustainability
Estimated Market Value
$6.00 to $12.00 per board foot depending on the intensity of the spalting and stability.
Wood Age Estimate
The sample appears to be from a relatively young tree (under 40 years) based on growth ring curvature, with the piece itself having air-dried or sat for 1-3 years to develop the spalting.
Sustainability Status
Not listed by CITES or IUCN; generally sustainable and abundant, though quality spalted pieces are specialized finds.
Workability
Fair; soft sections due to rot can cause 'fuzzing' or tearout. Gluing and finishing are easy, but stabilizing resins are often needed for soft spots.
Notable Features
Distinctive black 'zone lines' caused by fungi; dust can be an allergen or respiratory irritant; lighter in weight than Sugar Maple.
Finish Recommendations
Film-building finishes like lacquer or polyurethane help harden the soft spalted areas; sanding sealer or CA glue is recommended for stabilizing soft fibers.
Identification Confidence
High; the combination of very light base wood, characteristic black fungal zone lines, and diffuse-porous structure is classic for Soft Maple.