What Wild Service Tree actually is#
Sorbus torminalis is scattered thinly through the broadleaf woodlands of central and southern Europe. It rarely grows in stands. It turns up as isolated trees within mixed woodland, it has never been managed as a plantation species anywhere, and it does not grow large.
Almost everything that reaches the timber market comes from individual trees felled during ordinary woodland management rather than from any production forestry. That is the single most important fact about buying it: scarcity here is structural, not a grading question or a market cycle.
In France it is alisier, and it carries a considerably higher profile there than in English speaking markets, treated as a fine fruitwood for precision work and instrument parts rather than as a forest timber sold by volume.
What the data does and does not cover#
This species has the most partial dataset in the catalogue, and the gaps are specific.
Density at 770 kg per cubic metre is the highest of any species KORENA lists. Modulus of rupture at 119.3 MPa is also the highest here. Shrinkage figures are published. These come from the cited reference, which covers the Sorbus group including S. torminalis explicitly.
The Janka figure of 7,520 N is published as an estimate derived from specific gravity, not a measured test, and KORENA records that qualification on the species record rather than showing the number bare. If accurate it would make this the hardest wood in the catalogue by a wide margin, well above Sessile Oak at 4,990 N. Treat it as indicative.
No decay resistance rating and no workability data are published at all. Both fields are therefore empty rather than filled by inference from a related Sorbus. The practical consequence of the missing durability rating is that there is no sourced basis for using this wood outdoors.
Reading a Wild Service slab#
Colour is warm reddish brown through to golden, darkening attractively with age and light exposure. The texture is fine and even and the surface is notably lustrous, closer in character to pear or cherry than to oak or ash.
Grain is fine and often slightly wavy, and figured examples occur.
Because the trees are small and irregular, expect narrow widths, short clean lengths and a higher proportion of character than you would accept in a commodity species. A large clean slab of this species is a genuinely unusual object.
At the bench, with caution#
No workability ratings are published, so what follows is inference from traditional use rather than sourced assessment, and should be tested on an offcut before you commit.
Dense fine grained hardwoods of this type generally demand sharp tooling, reward light cuts, and blunt edges faster than open grained species. At 770 kg per cubic metre this will work hard rather than easily.
Its historical applications point the same way. It has been used for centuries for precision components, musical instrument parts, tool parts and fine turning, all of which require a wood that holds a crisp edge and a stable dimension. None of those uses suggest a timber that machines casually.
Drying and movement#
Volumetric shrinkage of 15.0 percent is high, second only to Turkey Oak among the hardwoods here, with tangential at 8.4 against radial at 6.2 percent.
Dense fine grained hardwoods generally need slow careful drying to avoid checking, and the small log sizes typical of this species concentrate drying stress. The sensible approach is to buy material that has already stabilised rather than fresh stock, check the measured moisture value on the listing, and let it acclimatise fully before working.
Where Wild Service Tree is the right answer#
Precision and instrument work, fine turning, small cabinetry and boxes, tool handles and parts, and decorative slabs where rarity and colour are the point.
It is the wrong answer wherever volume is needed, wherever a full specification sheet is required, and outdoors, where no durability rating exists to support the choice. It is also the wrong answer if the piece could be made just as well in European pear or hornbeam, both of which occupy similar territory with better availability.
Sourcing and EUDR#
Not listed in the CITES Appendices, and reported by the cited source as not assessed on the IUCN Red List, so no status is displayed rather than one assumed.
The constraint is scarcity rather than regulation. Because material arrives through woodland management felling rather than managed production, the chain behind any given slab is shorter and less standardised than for a commodity species, which makes the provenance record more important rather than less. KORENA lists the partner yard and region on every slab, and on this species that is worth reading rather than skimming.
