Percentage of Illinois municipal tree ordinances that contain specific tree-related provisions.
| Provision variable | Abbreviation | % contained in ordinances |
|---|---|---|
| Requires property owners to care for trees in or invading right-of-way zones adjacent to their property | DUTY | 80% |
| Guidelines regulating penalty fines for ordinance noncompliance | PNTY | 63% |
| Requirements for abatement of diseased trees | DISE | 62% |
| Guidelines regulating permits required for tree planting, maintenance, or removal | PRMT | 58% |
| Authorization for public workers to enter private property for tree inspections, maintenance, or removal | PRVT | 57% |
| Guidelines for enactment of a municipal tree board | TRBD | 56% |
| Prohibits damaging actions or defacement of trees | DAMG | 50% |
| Prohibits interference with tree care personnel | INTR | 48% |
| Refers to a document outside the municipal code for tree Planting, maintenance, or removal specifications | RFRA | 42% |
| Specifies minimum and/or maximum allowable distance between street trees | SPAC | 40% |
| Specifies minimum and/or maximum allowable distance between street trees and intersections | CURV | 38% |
| List of acceptable species for planting | GDSP | 34% |
| Specifies minimum and/or maximum allowable distance between street trees and street curbs and/or sidewalks | CURB | 34% |
| Guidelines regulating tree preservation | PRSV | 33% |
| Guidelines specifying planting stock and/or planting technique | PREQ | 30% |
| Planting and/or maintenance specifications for trees near utilities | UTLY | 29% |
| Prohibition of topping | TOPG | 29% |
| Authorization and guidelines for a community forestry education program | EDUC | 27% |
| Requirement for utility companies to follow ordinance | COMP | 25% |
| Guidelines for enactment of tree care personnel other than community arborist or forester | OTHR | 25% |
| List of prohibited species for planting | BDSP | 24% |
| Authorization for community to place lien on property for tree ordinance violations | LIEN | 24% |
| Requires stump removal after felling of tree | STMP | 23% |
| Requires tree care personnel to have an arborist license | ARBL | 18% |
| Guidelines for enactment of a community arborist | ARBT | 15% |
| Guidelines for enactment of a community forester | FRST | 9% |
| Guidelines for emergency tree removal | EMGY | 8% |