Grand Junction, CO Invasive Plant Rules: Prohibited Species (2026)

Grand Junction Municipal Code § 21.07.030(c)(1)(i) requires vegetation in new development to be suitable for the city's climate and soils and selected from the City of Grand Junction Suitable Plant List maintained by the Director, with a process for applicants to petition adding species not on the list. Within that same subsection, the code states plainly that noxious or invasive species are not allowed to be planted in development but may be preserved in development, so existing noxious or invasive plants already growing on a site are not required to be removed, only new plantings of them are barred.

The Director separately retains authority to disapprove a listed species if it is deemed inappropriate for the planting conditions of a specific project. The code's definitions section, GJMC § 21.14.020, defines noxious or invasive species as non-native plants that have a recognized harmful impact on natural habitats and/or are likely to displace native plant species for light, space, soil moisture and nutrients, including those species identified under the Colorado Noxious Weed Act, C.R.S. Title 35, Article 5.5. Because § 21.07.030(a)(2) exempts individual-lot development of single-unit detached or duplex dwellings from the landscaping chapter entirely, this planting ban reaches larger developments, subdivisions and multi-unit or commercial projects rather than an existing single-family homeowner's yard.