What makes a tree a veteran

Age is only part of the story. A veteran tree is defined by its features as much as its years: a hollowing trunk, dead limbs high in the crown, water pockets, sap runs, flaking bark, crevices, fungal brackets and buttress roots spread well beyond the original stem. Some oaks reach that stage at two or three hundred years; other species get there sooner. In a working wood these trees are usually the survivors — boundary trees, old standards left above the coppice, stems too awkward to fell. They are also the most valuable things on the holding: a single ancient oak can carry hundreds of species of invertebrate, fungus and lichen, many of which need trees of exactly this age and condition.

Roots reach further than the crown

The feeding roots of a mature tree typically spread two to three times the radius of its canopy, sometimes further. Compaction squeezes the air out of that soil, and the damage shows years later as crown dieback, dead bark and decay creeping into the base. A few habits make a real difference:

• Mark the root protection area with posts, tape or a ring of brash before any machinery arrives.
• Plan extraction racks and turning points clear of the root zone, then stick to them.
• Work when the ground is dry or frozen, and use low ground pressure tyres, tracks, a winch or a horse on wet sites.
• Never stack timber or spoil at the foot of a veteran, and keep bonfires well clear — the heat alone can kill cambium and shallow roots.

Grazing and livestock

Wood pasture with light grazing is one of our richest habitats, but stock can undo decades of continuity in a few wet weeks. Thin-barked species such as beech, ash and hornbeam suffer most: cattle and ponies strip bark from the base and rumps, while wet weather poaches the ground around buttresses until roots are exposed. Dung and supplementary feed enrich the soil and speed decay at the foot of the tree.

• Fence the best veterans between autumn and spring, or use movable electric fencing.
• Site troughs, licks and feeders well away from old trees, and never feed under the canopy.
• Keep stocking levels low and rotate grazing; accept a few poached patches rather than a trashed wood.
• Give younger successor trees split-chestnut or metal guards — they are far more vulnerable than the veterans.

Dead wood is the point

Standing dead branches, hollow limbs and cracked heartwood are not defects to tidy away — they are the habitat. Saproxylic beetles, flies and fungi need a continuous supply of decaying wood, and the rarest need a single tree to provide it for centuries. Barbastelle and Natterer's bats roost under loose bark and in crevices; lesser spotted woodpeckers forage over dead limbs; beefsteak fungus and the oak polypore fruit from old wounds. A wood with no dead wood in its trees is, ecologically, a young wood.

• Leave dead limbs in place unless they overhang a path, road, ride or bench.
• Where pruning is genuinely necessary, shorten the limb back to sound wood with a jagged coronet cut rather than removing it flush.
• Never fill cavities or paint a wound, and leave ivy on a mature trunk — it shelters bats and invertebrates and harms nothing.
• Keep cut deadwood on site in sunny log stacks, and leave a few stumps standing as monoliths.

Working the wood around old trees

Veterans in a neglected wood are often shaded and drawn up, but sudden exposure is dangerous too, causing bark scorch on the south and west sides and windthrow in shallow-rooted trees. Halo thin in two or three gentle stages over several years, taking the competing stems from the sunny side first and leaving a little shelter. Keep coppice and scrub in rotation: the open, worked ground around a veteran is part of what makes it valuable.

Plan felling so nothing is dropped or dragged across the tree or its roots, and use brash to protect the root zone from machinery. Keep tracks and rides in the same place year after year rather than re-routing them through new ground. If a dangerous limb or a whole tree must come down, the timber is a small gift — brown oak from a beefsteak-infected stem, or a clean length of cherry or ash, is prized by local craftspeople — and the rest can stay on site as deadwood.

Records and successors

Write down what you have. Tag each veteran, map it, photograph the crown and the base, and note the features: hollows, sap runs, fungal brackets, bat evidence. A simple file, updated every few years, lets you spot decline early and defend the tree when someone asks why the timber is not being cut.

Then plan for the next generation. Identify the trees on their way to becoming veterans — younger stems with a dead branch, a wound, the beginnings of a hollow — and give them the space and the time to get there.

Every bit of work in the wood, from hurdles and stakes to charcoal and firewood, is what pays for the time spent walking around the old trees rather than over their roots. Keep stock off in the wet months, keep wheels off the roots and leave the dead wood standing, and the veterans will carry on doing what they have done for centuries.