Invasive Plant Rules in Norman, OK (2026)
2 verified invasive plant rules for Norman, Oklahoma, sourced directly from the municipal code and official government pages.
Verified from official government sources
Prohibited Species
Norman's Appendix D Plant List flags Tree-of-Heaven and Paper Mulberry as invasive species that fail the city's cultural-characteristic test for trees and shrubs. Because Residential Code Section R328.1 requires every new single-family and two-family lot to plant trees selected only from the list's Section B, these two invasive species cannot be used to satisfy that mandatory requirement.
Norman Blocks Invasive Trees From Required Plantings
Some RestrictionsNorman Code of Ordinances, Appendix D § A; Residential Code § R328.1
SECTION A: Plant species that DO NOT MEET the required cultural characteristics suitable for Norman's climate and landscaping requirements. ... Ailanthus altissima Tree-of-Heaven 30-60' 30-40' Invasive species. Will survive any condition ... Broussonetia papyrifera Paper Mulberry 50' 35' Invasive species. Will survive any condition ... Trees must be selected from the plant list in section B of ...
Tree-of-Heaven Removal
Norman's Appendix D Plant List names Ailanthus altissima, Tree-of-Heaven, an 'Invasive species' that 'will survive any condition' and does not meet the city's cultural-characteristic requirements for trees. Because Residential Code Section R328.1 requires new-home trees to come only from the list's Section B, Tree-of-Heaven cannot satisfy that mandatory planting requirement.
Norman Lists Tree-of-Heaven as Invasive
Some RestrictionsNorman Code of Ordinances, Appendix D § A; Residential Code § R328.1
SECTION A: Plant species that DO NOT MEET the required cultural characteristics suitable for Norman's climate and landscaping requirements. ... Ailanthus altissima Tree-of-Heaven 30-60' 30-40' Invasive species. Will survive any condition ... Trees must be selected from the plant list in section B of appendix D for the City and be at least two-inch caliper (diameter measured six inches above gro...