Sources and editorial approach

Useful guidance makes its evidence visible. We separate local procedures, broader tree-care recommendations and the practical questions a property owner can take to a professional.

Local sources come first for local rules

Municipal sources support city review processes, public-tree responsibility and collection eligibility. County or state guidance retains that geographic label. A neighboring city’s procedure does not establish the rule at your address.

Before a city guide is eligible for publication, its research record must contain at least three useful verified facts across two topics, with at least two distinct authoritative source URLs. This is an editorial check, not an assurance that every possible local requirement is covered.

Tree-care guidance has a different role

Professional organizations, utilities and university extension resources help explain why a work proposal needs assessment, a clear objective and appropriate precautions. General information cannot diagnose an individual tree or determine whether it is safe to occupy an area.

Dates, scope and corrections

Editorial pages show their checked or updated date and link to the sources used. Procedures can change. Follow the source link and confirm the current requirements before committing to work. If sources conflict, the guide should make the uncertainty visible rather than convert it into a confident rule.

Research and service connections are separate

The presence of a city in the directory is not proof of service coverage. A call connection must have a verified destination and an accurate description of the referral relationship. We do not treat a click, a connected call and an accepted payable call as the same event.

Begin with the field guides or the local research directory.