Q.Will the roots of an 8-foot tall lilac tree damage a foundation?
Nil
GKH_Susan
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on July 10, 2019
There is little risk from their shallow roots. Here is more:
https://www.gardeningknowhow.com/ornamental/shrubs/lilac/damage-from-lilac-roots.htm
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