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Michigan tree stories // Ann Arbor, 2014

A $400,000 move.
A living landmark.

A bur oak estimated at 250 years old. A canopy reaching 65 feet high. A tree, root ball, and soil weighing roughly 700,000 pounds. The University of Michigan's historic transplant shows the extraordinary effort people will make to keep a remarkable tree standing.

Read MLive & the coverage ↓
250Years old, estimated at the time
65 ftReported tree height
700,000 lbApproximate tree, roots & soil weight
$400,000Widely reported relocation cost

The decision // Keep a piece of Michigan history

One tree. An extraordinary investment.

In 2014, expansion of the Stephen M. Ross School of Business put a historic bur oak in the path of construction. Moving the tree offered a way to make room for the building while retaining a living connection to the landscape's past.

The figure that made headlines was about $400,000 to relocate one tree. That was a project-specific investment in moving an unusually large, established oak, rather than a typical price for transplanting a residential tree. Reports described the relocation as part of the donor-funded business school expansion.

The oak was commonly described as about 250 years old and 65 feet tall. Estimates of its age varied, which is why the age belongs with its historical reporting rather than a precise planting date. Michigan Public's moving-weekend report ↗ explains the funding and preparations.

The scale // Above and below ground

700,000 pounds was more than a trunk.

The widely repeated weight of roughly 700,000 pounds referred to the tree together with its root ball and surrounding earth. Earlier estimates also reached 850,000 pounds. The load included the underground material that needed to travel with the oak, not just the wood visible above ground.

That distinction explains much of the difficulty. A crew had to support a towering tree and an enormous mass of soil while moving the load through an existing campus. Keeping that mass together required specialized preparation and heavy transport equipment.

Michigan Public's technical overview ↗ described a root ball about 40 feet across, root pruning, supplemental watering, and preparations beneath the roots. The move was an engineering operation shaped around a living organism.

The operation // Preparation, transport, aftercare

The journey did not end at the planting hole.

Environmental Design, the specialist tree-moving company, handled the relocation. Steel support, inflatable lifting equipment, and heavy transporters helped lift and move the oak. Tech Times' account of the operation ↗ described the scale of the equipment and the work involved.

The sequence was not a single effortless lift. Connecticut Public's NPR coverage ↗ documented the lifting equipment and transport. Months later, CBS reported new leaves ↗.

Longer-term coverage adds an important chapter. Michigan Gardener's 2015 follow-up ↗ described encouraging growth a year after the move. A 2021 University of Michigan account ↗ later noted signs of decline, continued care, and saplings grown from the oak's acorns. Early growth was encouraging, but it was not a guarantee of lasting recovery.

This is an account of the historic move and dated follow-ups, not a claim about the oak's condition today.

Polgar Tree Surgeons // Your own Michigan trees

Look beyond the canopy.

The story is a reminder that a mature tree is connected to the ground around it. Before digging, adding soil, or changing the landscape near an established tree, include the roots in the conversation.

Polgar Tree Surgeon & Removal LLC provides arborist services including trimming and pruning, tree removal, stump grinding, storm cleanup, and AirSpade root collar excavation. Tell us what has changed around your tree and what you are seeing in its branches.

Polgar did not perform this university transplant. The project is featured here as a Michigan tree story, with credit to the crews and publications that documented it.

The coverage // MLive first

Follow the story, publication by publication.

Local reporting, national coverage, and later updates offer different views of the same extraordinary transplant. Several outlets carried Associated Press reports; Connecticut Public carried NPR coverage. Each publication name below appears beside its direct story link. Some archives may require a subscription or limit access.

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