When I tell people that trees too close to the house can create problems with the foundation, I am sometimes met with skepticism. After all, how can a measly piece of wood move heavy concrete? Well trees do it one cell at a time. As the tree grows it can exert tremendous force on the wall leading to cracking or even collapse of the wall. When I first looked at the wall in the picture below I thought that perhaps someone had run into it with a vehicle----as it is a barrier wall at the parking area in front of the wall. But on the “tree side” of the barrier, one can clearly see that it is the tree that is slowly moving the wall. One cell at a time.
Charles Buell
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