A tree that should not still be here
A few miles south of Grantham, in the village of Woolsthorpe-by-Colsterworth, there is an apple tree that is approximately 400 years old. That alone would make it worth pausing over. What makes it stranger is that it nearly ended in the early nineteenth century — blown down in a storm around 1820 — and then quietly re-rooted itself and kept growing. The National Trust, which now cares for the site as a Grade I listed property, regards the tree standing in the orchard today as the original specimen. Not a cutting planted in its memory. Not a well-meaning replacement. The same tree.
The variety is Flower of Kent (Malus domestica 'Flower of Kent'), a large, green-striped cooking apple not widely grown commercially today. It is unremarkable to look at — gnarled and low, the kind of tree you might walk past in any old Lincolnshire orchard without a second glance. Its significance lies entirely in what happened in the garden around it during the plague years of 1665 and 1666, when a young man from Woolsthorpe returned home from Cambridge and began working through ideas that would eventually reshape how the world understood motion, force, and falling objects.
Woolsthorpe Manor is open to visitors and sits just off the A1 — closer to most people in Grantham than the town centre is to its own outskirts.
What Newton actually said about the apple
The earliest written record of the apple story is not a newspaper report or a legend passed down through Woolsthorpe village. It is a manuscript held by the Royal Society in London, written in 1752 by the antiquarian William Stukeley and based on a conversation he had with Newton himself in 1726. In it, Newton recalls sitting in the garden when 'the notion of gravitation came into his mind' — prompted, he said, by watching an apple fall. The account is precise in one important respect: Newton did not claim the apple struck him. He described an observation that triggered a train of thought about attraction and the behaviour of falling bodies.
John Conduitt, Newton's nephew-in-law, recorded the same episode independently, lending the story a second witness. The version most of Europe encountered came from neither of them directly but from Voltaire, whose Lettres philosophiques of 1733 carried it across the Channel after he heard it from Newton's niece, Catherine Barton Conduitt, during his time in England. The story was already travelling outward from Lincolnshire within a few years of Newton's death in 1727.
The 'hit on the head' detail — familiar from cartoons and shorthand summaries — is a later embellishment with no basis in Stukeley's manuscript or Conduitt's notes. It is worth setting aside, not to diminish the story, but because what Newton actually described is more interesting: an attentive mind catching a question in an ordinary moment. That the 1726 account comes from Newton at 83, looking back across six decades, is a reasonable caveat to hold lightly — but the Royal Society manuscript confirms he told it himself.
Why grafting changes what the descendants are
Fruit trees do not breed true from seed. Plant a pip from a Flower of Kent apple and you will grow something genetically distinct — a lottery of inherited traits that may bear little resemblance to its parent. To reproduce a specific cultivar faithfully, growers take a cutting from the original tree and graft it onto a rootstock: the cutting's cells fuse with those of the host plant and continue to grow, carrying exactly the same genetic material as the tree it came from.
This is how every descendant of the Woolsthorpe tree has been produced. It means that each one is not a tribute planting or an approximation — it is, in a defensible biological sense, the same organism displaced in space. The genetic identity of the cultivar is preserved whole, not approximated or inspired by the original.
The practical consequence is that institutions hosting a graft are not holding something 'in the spirit of' Newton's tree, the way a reproduction portrait evokes an original without being it. They hold a living extension of the same plant. That distinction is what gives the dispersal network its particular character — and what makes the question of where those grafts have ended up worth following.
Where the tree has ended up
The dispersal network starts close to Newton's own life. Trinity College, Cambridge — the institution where he spent the formative decades of his career — planted a graft beneath the rooms he once occupied, completing a loop between his birthplace in Lincolnshire and his academic home. In England, the National Physical Laboratory at Teddington and the Royal Botanic Gardens at Kew each hold a descendant: a measurement institute and a botanical collection, which between them capture the two registers in which the tree tends to be understood — as scientific symbol and living specimen.
Beyond Britain, the network spreads with some precision and some uncertainty. MIT and the University of Nebraska are among documented North American placements. CERN in Geneva is perhaps the most pointed: a tree rooted in classical mechanics growing at the site where physicists study the structure of matter at scales Newton could not have imagined. The juxtaposition is the point.
The most arresting episode in the tree's dispersal was not a planting at all. In May 2010, NASA carried a fragment of wood from the Woolsthorpe tree aboard Space Shuttle Atlantis (mission STS-132), travelling at approximately 17,000 mph in low Earth orbit. The object that prompted Newton's thinking about the force preventing things from flying off into space was sent, briefly, into exactly that condition.
Further placements in Japan, Brazil, and Australia appear in multiple independent accounts, suggesting a network of somewhere between dozens and roughly forty to fifty institutions worldwide — though no single authoritative census of all sites exists. The pattern, wherever it reaches, is consistent: physics departments, botanical gardens, and science heritage sites. Institutions that want both the lineage and the living thing.
The contact relic and what institutions want from it
Consider what distinguishes the tree from the other objects associated with Newton. A first edition of the Principia records his conclusions; a portrait shows his face; Stukeley's manuscript captures his words. Each of these things represents Newton's work. The tree does something different — it asserts a physical connection to the moment before the work existed, to the orchard at Woolsthorpe in 1665 or 1666 when the ideas were still forming. Historians of material culture sometimes call this a 'contact relic': an object whose value comes not from intellectual content but from proximity, real or claimed, to a significant moment. The tree's presence at an institution does not teach anyone about gravity. It says something about the institution.
What it says, specifically, is that a lineage runs through this place. The same impulse drives the naming of university buildings after scientists, or the display of archive letters in glass cases — but the tree is more literal than any of those gestures. Because of how grafting works, as established earlier, the claim is not merely symbolic. That makes it unusually potent as institutional communication.
There is a quiet tension in this. A relic's power depends on the origin story being settled and stable. But the apple story was shaped, at least in part, by Newton himself in 1726 — looking back across six decades, constructing his own intellectual biography. Historians note that the account is credible without being unmediated. Institutions tend not to foreground that complexity, which is understandable; it is not cynicism so much as the ordinary operation of legacy.
What it means that the original stays in Lincolnshire
All of it — the Trinity cutting, the CERN planting, the fragment in low Earth orbit — traces back to a specific field in Lincolnshire. The origin point cannot be reproduced or relocated. There is only one Woolsthorthe orchard, and it is outside Grantham.
That gives the surrounding area a particular kind of significance, not symbolic but physical and traceable. Any institution can display a Newton portrait or cite the Principia. What Woolsthorpe holds is the source from which every cutting in the network was ultimately taken. The lineage runs in one direction.
The tree at Woolsthorpe is visitable — the National Trust manages the Manor and opens it to the public — and standing next to it carries a different weight from encountering any descendant, however distinguished the institution hosting it. A clone is genetically identical; it is not the same tree in the way the original is the same tree. The distinction matters in ways that are hard to articulate but easy to feel.
What the tree models, finally, is something quietly remarkable: a single local object that has carried an idea across centuries and continents without itself going anywhere. The apples still fall in the same orchard. The network grew outward from that fixed point, and it keeps pointing back.
- [1] Woolsthorpe Manor. https://en.wikipedia.org/?curid=140503 https://en.wikipedia.org/?curid=140503
- [2] Isaac Newton. https://en.wikipedia.org/?curid=14627 https://en.wikipedia.org/?curid=14627