The arborist added that sophisticated underground irrigation systems water the trees.

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"Until you really analyze your budget, you don't realize that the bill for your arborist has gone up 20% over the past five years, and it's not because you have more trees, " she says.

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Keith Brown, an arborist and owner of Austin Tree Experts from Austin, Texas, combined an online app builder with training to make an app that employees and customers use to identify and record details of trees.

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L. Thomas Chancey, a Fort Lauderdale arborist, says he was hired by the previous owner of the riverfront lot to see whether it was feasible to move the rain tree, and he concluded it was too risky.

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