Traditional orchards as a priority habitat

The habitat inventory works to a structural definition rather than to a historic or aesthetic one. It turns on a group of fruit trees — a small number is enough, five being the usual threshold — grown on vigorous rootstocks at low density, over permanent grassland, and managed at low intensity. It is the structure that matters, not the age of the planting or the variety of fruit.

That definition deliberately excludes the intensive bush orchard, which fails on density, on rootstock and on ground management. It includes orchards of apple, pear, plum, cherry and other fruit, so cider and perry orchards are a subset of the habitat rather than the whole of it — though in the Three Counties and the West Country they are the great majority of what is left.

It also includes orchards that are no longer productive, and in practice a large share of the mapped resource is in that condition: over-mature trees, gaps where trees have died and not been replaced, and a sward that has either been improved for grazing or abandoned to scrub. The habitat inventory records condition alongside extent for exactly this reason, and the condition data is the part most often left out when the numbers are quoted.

Open-grown trees behave differently from woodland trees. They develop wide, low, heavily branched crowns; they are exposed to sun on the trunk; they accumulate dead limbs while continuing to live; and their heartwood decays while the sapwood carries on, hollowing the trunk from within. Those are the features of ancient wood pasture, and fruit trees develop them faster than oaks do because they are shorter-lived.

That last point is what makes orchards disproportionately valuable. An oak may take two hundred and fifty years to start providing decaying heartwood and rot holes; an apple tree can do it in sixty or seventy. A traditional orchard is therefore a rapid generator of veteran-tree habitat, and it delivers in decades what a parkland delivers in centuries.

The organisms that depend on it are correspondingly specialised. Saproxylic invertebrates — those dependent on decaying wood — are among the most threatened groups in Britain, and traditional orchards support a distinctive assemblage of them. Old, rough bark supports lichen communities that clean modern bark does not. Hollows and rot holes provide nest sites for birds and roosts for bats.

The grassland beneath a traditional orchard is often the most overlooked part of the habitat and sometimes the most valuable. Because the trees make cultivation impractical, orchard swards are frequently the last unploughed ground on a farm, and decades or centuries of undisturbed low-intensity grazing produce a plant community that cannot be recreated quickly.

The clearest indicators are fungal and entomological rather than botanical. Waxcap fungi, which fruit in short, undisturbed, unfertilised grassland and are slow to colonise, are a recognised sign of long grassland continuity, and orchard swards are among the places they persist. The mounds of the yellow meadow ant are another: an anthill takes many years to build and is destroyed by ploughing, so a sward full of them is a sward that has not been disturbed in a long time. Green woodpeckers feeding on the ground in an orchard are usually feeding on those ants.

The management that maintains this is grazing or hay cutting at low intensity, without fertiliser and without reseeding. What destroys it is improvement — fertilising, reseeding or ploughing — and abandonment, which lets coarse grasses and scrub take over. An orchard whose sward has been improved has lost half its habitat value while looking entirely unchanged from the gate.

The features that make a traditional orchard valuable as habitat are the same features that make it unproductive as a fruit enterprise. Wide spacing means few trees per hectare and low yield. Old trees mean declining crops and dropped limbs. Decaying wood means canker and structural failure. Permanent unimproved grassland means low forage output. Nothing about this can be optimised away, because it is not an inefficiency: it is the habitat.

This should be said without either of the two available evasions. It is not honest to present traditional orchards as an economically competitive way to grow cider fruit, because they are not. It is equally not honest for a producer to trade on orchard imagery while sourcing fruit from intensive plantings, or to present a bush orchard as though it delivered the same public goods.

What follows from stating it plainly is a clearer question. If traditional orchards produce habitat, landscape and cultural continuity that the fruit price does not pay for, then those things have to be paid for some other way — through agri-environment support, through a premium a producer can actually earn and demonstrate, or not at all. That is a real choice with real consequences, and it is more useful to a reader than another photograph of blossom.