Below is a video, produced by Cornell University, where one Platanus × acerifolia (London plane tree) was excavated and transplanted from a parking lot. One tree sample size, with no control group, and no evidence that the independent and dependent variables have been isolated does not a scientific evaluation make, and it is a self evaluation, but it's an interesting video none-the-less. It also doesn't explain why the roots were broken rather than pruned with a sterilized instrument...maybe someone with more nursery experience can let us know!
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