Q.Lilac root damage
Do I need to be concerned, as lilac bush is only few feet from my garage? The lilacs have never been pruned and are 20-25 ft high. I have noticed cracks in the concrete floor of my garage, which does not have deep foundations. Is this lilac causing damage I am also concerned it will affect my house foundation, as my garage is attached to the house.
This article will help you:
https://www.gardeningknowhow.com/ornamental/shrubs/lilac/damage-from-lilac-roots.htm
For more information on growing lilacs, please visit the following link:
https://www.gardeningknowhow.com/ornamental/shrubs/lilac/lilac-care-growing-and-planting-lilac-bush-plants.htm