Tawa

Overview

Tawa is a New Zealand hardwood with pale, fine, uniform wood that machines and turns very well. The best "white" boards are clean and creamy, and some pieces carry dark blackheart streaks. It is a good furniture and flooring timber but is scarce and tightly controlled, so it is an unusual rather than everyday choice.

Pros

• Moderately fine, straight, uniform grain that machines and finishes extremely well, and is noted for excellent turning (Scion/NZ Forest Service information sheet).
• Hard and moderately strong: 722 kg/m3 at 12% moisture and a side hardness of 4.8 kN dry, about 1,080 lbf on a converted basis.
• Dressing grades are suited to high-quality furniture, interior woodwork and flooring.
• White material can be air- or kiln-dried from green without degradation.

Cons

• Blackheart is perishable, collapses in drying and is less desirable, so it is usually sold separately.
• The outer wood is perishable and susceptible to powder-post beetle (Lyctus) and common borer, so it needs preservative treatment or careful sourcing.
• White dressing grades can be hard to find; the sheet notes they are the most sought after.
• The sheet is a 1980s document; I could not find current commercial specifications or prices.

Variants and subspecies

• White dressing grade: the premium, clean pale timber.
• Blackheart: dark brown to black heartwood zones; usually marketed separately and considered less desirable.
• No named subspecies or cuts are sold separately beyond the two grades above.

Working and finishing

The information sheet says it machines and finishes extremely well, with excellent turning properties. White material may be air- or kiln-dried from green; stock with blackheart streaks should be dried at lower temperatures or air-dried before final kiln-drying (same sheet). Keep it dry and indoors.

Staining and finishing colour

It is pale and even, so clear finishes show off the creamy colour, and stain or dye will read cleanly. The dark blackheart streaks stay dark through most finishes, so decide up front whether to cut them out.

Sustainability and handling

Not in the CITES Appendices (checked 2026-09 against the Appendices in force from 5 March 2026). GBIF reports the species as Least Concern on the IUCN Red List (checked 2026-09). Wikipedia says it is largely protected in conservation areas and by environmental legislation, with licences granted occasionally for the odd fallen tree. I could not retrieve the legislation or export rules, so confirm the supplier's legal papers. The Lacey Act's 2008 amendment covers timber products (Wikipedia, Lacey Act), and the EU deforestation regulation applies to wood products from 30 December 2026 for large and medium operators. I found no dust-health notes in the sources I opened; wear a dust mask as with any hardwood. The sheet reports most tawa milled historically came from the central North Island.

Popular projects

High-quality furniture, interior woodwork, flooring, dowels and turned products.

Buying notes

Expect small volumes from New Zealand sawmillers and flooring merchants rather than US lumberyards. I found no price, so the number in the frontmatter is a stand-in and should be replaced. Ask for the grade (white vs blackheart), the drying method and the legal source before buying, and keep stock off damp ground because the outer wood is attacked by borers.