How To Prevent Roots From Growing Under Sidewalks Or Out Of Boundaries

Question

How deep do the Buford holly roots grow?

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Answer 1

These roots will send adventitious shoots out on occasion. They will seek any area that is suitable for them to send a shoot, and gaps in concrete are perfect for this.

Sealing those areas off, and maintaining some of the cracks will eliminate most of this, outside of hand-pulling and chemical control.

The good news is that these are not very destructive, however they are taking advantage of a place to send a shoot. Being a Chinese Holly, these will be more prolific than our own native types.

https://www.gardeningknowhow.com/ornamental/trees/tgen/problem-tree-roots.htm