Nux Vomica

Nux Vomica (Strychnos nux-vomica) is a hard, heavy tropical hardwood cut from a small to medium deciduous tree of the family Loganiaceae, native to India, Sri Lanka, and mainland Southeast Asia. The tree is far more famous — and infamous — for its round, disc-shaped seeds, the source of the potent alkaloids strychnine and brucine, than for its timber, but it does yield a serviceable, notably dense and durable wood used locally.

At a glance the wood is a fine, even-grained hardwood of medium to dark brown color, close-textured and dense, with a subtle rather than showy figure, exactly as seen on our sample. It is hard, heavy, and reputed to be resistant to insects — a trait plausibly linked to the bitter alkaloids present throughout the plant — which places it among the tough utility and implement timbers of its native range rather than among decorative cabinet woods.

The heartwood is a medium to dark brown, sometimes with a greyish or yellowish cast, and it is not always sharply demarcated from the somewhat paler sapwood. The grain is straight to slightly interlocked, the texture fine, even, and close, with a low to moderate natural luster and only a quiet, subtle figure — the plain, uniform surface noted on our sample rather than any bold pattern.

Nux Vomica is a dense, hard wood; it is distinctly heavy in the hand, and its Janka hardness is high — on the order of 1,700 lbf, placing it firmly in the hard range, comparable to or above many oaks. The wood is fine and close enough in grain to take a clean, smooth surface off the tools.

The timber is regarded as fairly durable and is reputed to resist insect and borer attack, a resistance often attributed to the bitter alkaloids that pervade the tree. Even so, like most tropical hardwoods it performs best when kept out of persistent ground contact and damp; treat exterior claims conservatively.

Within its native range Nux Vomica is used chiefly as a tough utility and implement timber. Typical applications include tool and implement handles, agricultural implements, cart and wheel parts, walking sticks, and general turnery, where its density, hardness, and fine grain are assets.

Its close, even texture makes it a reasonable turning and carving wood for small, hard-wearing objects, and its reputed insect resistance has encouraged its use for durable small structural and implement work. It is not a mainstream commercial cabinet or flooring timber and is rarely exported as a named decorative wood; most use is local and utilitarian.

Nux Vomica is a hard, dense wood, so it works with more effort than medium hardwoods: it is firm under hand tools and demands sharp, well-set edges, but its fine, close grain rewards the effort with clean planing, boring, and turning and a smooth finish. Any interlocked grain can pick up on quartered faces, so keep cutters keen. It holds detail well in turning and takes a good polish; it glues and finishes satisfactorily, though its density means pilot holes are wise before nailing or screwing to avoid splitting.

Toxicity — read this carefully. Strychnos nux-vomica is one of the classic poisonous plants: its seeds are the commercial source of strychnine and brucine, and these bitter, highly toxic alkaloids are present in tissues throughout the plant. The seeds are potentially lethal if ingested. Treat the wood and especially its dust as hazardous: use effective dust extraction and a respirator, avoid ingesting any dust or shavings, keep it away from food and children, and do not use this wood for any food-contact, toy, or utensil application. As with any exotic hardwood the dust can also irritate the eyes, skin, and respiratory tract; the added alkaloid load makes caution more than routine here.

Nux Vomica is not a mainstream traded timber. Within South and Southeast Asia it is a locally used utility and implement wood rather than a commercially graded lumber, and it is uncommon to essentially unavailable in Western hardwood markets, where the name is associated with the medicinal and toxic seed rather than with board stock. When encountered at all it tends to be small-dimension or craft material rather than dimensioned lumber, so price is best described by scarcity and local supply rather than any established market rate.

The species is widespread across its native range and is not listed under CITES, carrying no international trade restrictions as a timber. It is chiefly valued — and cultivated or wild-harvested — for its alkaloid-bearing seeds, so the wood is largely a by-product; formal FSC-certified timber supply is not a typical feature of this species.