Tulip Poplar Trees
Q.

Tulip tree – diameter and root question

Zone Kingston,ontario Canada | juliaintoronto added on June 12, 2018 | Answered

I recently purchased a tulip tree. Full sun and (relatively) good soil. Can you tell me - what is the diameter of main trunk for a mature tree? Second question - Would the roots lift a 24\" stone walkway located 2\' away from best planting site?

A.
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drtreelove
Certified GKH Gardening Expert
Answered on June 12, 2018

Assuming you are referring to tulip tree, sometimes called tulip poplar (Liriodendron tulipifera) and not tulip magnolia, or African tulip tree:
http://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=a878

--they are a very large growing tree, with a mature trunk diameter of 2 feet in 20 years possible, and 3 feet or more in 40 years. And yes, the roots, in time, would almost certainly lift a walkway even 4 to 6 feet away or more. They are beautiful, but need plenty of space.

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