columnar aspen root system

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columnar aspen root system

Question
We are thinking of planing a columnar aspen in a rock wall bed. It is a good size bed. Just wondering how invasive the root system is. Do they spread far from the tree base or do they grow downwards.
Thanks, wilma

Answer
These trees have about a branch width of 10 feet. The roots will grow about 1 1/2 times the width of the branches. The roots are not very invasive. If the area is more than 10 feet wide there will be little problem. Even smaller than this I would not think the tree roots will cause the wall any problems.

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