Ambrosia Maple
Acer rubrum and Acer saccharinum (Primarily)
Ambrosia Maple features distinct blue-gray fungal “tails” and small bore holes created by the Ambrosia beetle. It offers a rustic, decorative look while maintaining the reliable machining of soft maple.
Janka
950 lbf
Price Tier
$$
Dent Risk
Medium
Overview
Ambrosia maple isn’t a specific species, but a decorative grade of soft maple defined by the “tails” of the Ambrosia beetle. The signature blue, gray, and brown streaks are fungal stains that follow the beetle’s bore holes, creating a rustic, high-character appearance. It machines much like standard soft maple, though the small entry holes may require filling depending on the desired finish. It is the ideal choice for those wanting an “organic” look without the stability issues of advanced decay.
Key takeaways
- Signature streaks caused by beetle activity.
- Machines like standard soft maple species.
- Rustic look without structural stability issues.
At a Glance
Hardness & Heft
Janka: 950 lbf
Dry weight: 33 lbs/ft³ (529 kg/m³)
Color & Figure
Color: Pale/Gray-streaked
Grain: Usually straight
Figure: Blue-gray streaks and holes
Stability & Movement
Movement: Medium
Drying: Kiln dry to kill beetles; watch for checking.
Workability
Plays nice with
- Clear penetrating oils
- Sanding sealers
- Dark contrasting accents
Fights you on
- Bore holes need filling
- Sanding fuzz
- Tearout near streaks
Finishing
- Surface Prep: Scraper first, then 180-220 with vacuum.
- Blotch Risk: Medium
- Pores: Tight
Best Uses
Great for
- Rustic Tabletops
- Open Shelving
- Picture Frames
Avoid for
- Formal Dining Tables
- Food Prep Surfaces
- Precision Musical Instruments
Where it comes from
Northern USA Great Lakes region and Canada
Buying notes
Search for “wormy” maple in shorts or bundles; verify the wood is dry to prevent future movement.
- Sold As: Rough-cut lumber, wide slabs, and turning blanks
- Look For: Vibrant blue-gray staining and centered beetle tracks that stretch across the face.
What to Watch Out For
- Active Infestation
- Structural Voids
- Staining Bleed
Practical Alternatives
- Blue Pine (Beetle Kill)
- Pecan/Hickory
- Black Limba
Shop Notes / Deeper Dive
Working with Ambrosia maple is very similar to standard Soft Maple, but those beetle tracks add a unique variable. The wood remains dense and stable, though you may encounter slight “brittleness” right at the edge of the bore holes. It machines cleanly and glues up beautifully, making it a reliable choice for furniture that needs a rustic touch. If you aren’t planning to fill the holes with epoxy, make sure to blow out the dust from the tracks before applying your final finish to keep the colors crisp.
Like what you see?
While I occasionally work with some of these species, availability varies widely. If you’re researching woods for a custom project, feel free to reach out.
Reference Notes: Wood grain and color can vary significantly within a species depending on growing conditions, age, and cut orientation. Images on this page are provided as general reference examples and may not represent every possible variation of the species. Geographic distribution maps illustrate typical native or commonly cultivated ranges and may not reflect every region where the species occurs today.
Additional technical data and botanical information may be referenced from sources such as the USDA Forest Products Laboratory Wood Handbook.