Q.Alder trees
Do they cause root damage to close buildings?

Downtoearthdigs
Answered on May 3, 2017
Alder Trees have a large and expansive root system.
You should consider this tree an invasive root system tree.
https://www.gardeningknowhow.com/ornamental/trees/alder/alder-tree-information.htm
https://www.gardeningknowhow.com/ornamental/trees/tgen/trees-with-invasive-roots.htm
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