Hello,

I identified this tree from my Plant ID app as a Japanese Cherry (Prunus serrulata)

Cutting the roots of a Japanese Cherry (Prunus serrulata) can affect its future growth and stability, potentially impacting nearby structures like sidewalks. Here’s what I found from educational sources:

Root Growth: The Japanese Cherry is known for its spectacular spring flowers and can grow 15 to 25 feet tall and equally wide. More information at this link:

Prunus serrulata (Japanese Cherry, Japanese Flowering Cherry, Oriental Cherry) | North Carolina Extension Gardener Plant Toolbox (ncsu.edu)

After cutting roots, the tree may attempt to grow new roots to stabilize itself, which could lead to new growth near the cut area.

Sidewalk Impact: Trees with damaged roots can become unstable and may lean or fall, posing a risk to nearby structures. More information at this link:

Prunus serrulata (Japanese Cherry, Japanese Flowering Cherry, Oriental Cherry) | North Carolina Extension Gardener Plant Toolbox (ncsu.edu)

However, the Japanese Cherry typically does not have aggressive roots that would push up a sidewalk. More information at this link:

ENH-676/ST517: Prunus serrulata 'Kwanzan': Kwanzan Cherry (ufl.edu)

Care After Cutting: It’s important to provide good air circulation and avoid poorly drained soils to reduce disease risk. More information at this link:

Prunus serrulata (Japanese Cherry, Japanese Flowering Cherry, Oriental Cherry) | North Carolina Extension Gardener Plant Toolbox (ncsu.edu)

Also, consider consulting with a local certified arborist for site-specific advice on managing your tree post-root cutting. You can consult a local certified arborist for a more detailed onsite assessment and personalized advice. To find a certified arborist in your Zip Code, go to this link:

Find an Arborist (treesaregood.org)

Monitoring the tree’s health and stability, especially after root disturbance, is crucial to minimize future issues. If you notice signs of stress or instability, a professional assessment might be necessary to ensure the safety of both the tree and the sidewalk. 

I hope this helps!