Invasive Plant Rules in Mesa, AZ

If you live in Mesa or are thinking about moving there, invasive plant rules are one of those things you probably won't think about until they affect you directly. Mesa has 2 specific rules on the books covering different aspects of invasive plant rules, and some of them might surprise you.

Front Yard Gardens

In Mesa's Desert Uplands Area, the desert-character overlay in northeast Mesa, the City doesn't dictate what homeowners plant in their own front and rear yards. Section 9-6-6(I)(5) of the Mesa City Code leaves front and rear private yard and garden plant choices to the homeowner and their HOA, unlike the required native-plant lists that govern common areas.

Key details: Governing section: Mesa City Code § 9-6-6(I)(5). Applies to: Desert Uplands Area only. Private yard plant choice: Left to homeowner/HOA. Common-area invasive removal: Required, § 9-6-6(I)(9)(d). Prohibited plant list scope: Developer-installed common landscaping.

This section does not create a violation category for a homeowner's private front- or rear-yard plant choices in the Desert Uplands Area: the code expressly defers that choice to the homeowner. The removal duty for invasive species applies instead to common areas, revegetated slopes, and street/median landscaping installed under a development's approved landscape plan, and failure to remove invasive growth there or to maintain required plant material is enforced against the developer or HOA responsible for that common landscaping.

If you are coming from a city with tighter rules, you will find Mesa gives residents more flexibility on front yard gardens.

Prohibited Species

Inside Mesa's Desert Uplands Area, required landscaping must be selected from the Preferred and Acceptable plant lists in Table 9-6-6.D.5 of the City Code, and a companion Prohibited Plant List bars species including citrus, oleander, olive trees, all palms, all pines, junipers, and salt cedar (tamarisk) from being used to meet that requirement.

Key details: Governing Table: Table 9-6-6.D.5. Applies To: Desert Uplands Area subdivisions. Prohibited Species: Citrus, oleander, olive, palms, pines, tamarisk. Required Source: Preferred/Acceptable plant lists only. Enforcement: Civil code offense, Hearing Officer.

Developing land "contrary to or in violation of any provision of this Chapter," which includes the Table 9-6-6.D.5 planting requirements, is a Class 1 misdemeanor under Section 9-6-8(A)(2). Lesser violations of the Chapter are treated as civil code offenses under Section 9-6-8(B), heard by a Hearing Officer, and a person cited can appeal within 10 days by writing to the Development Services Director.

The Bottom Line

Mesa's invasive plant rules rules are a mixed bag. Some areas are strict, others are relaxed, and the details matter. The best approach is to check the specific rule that applies to your situation rather than assuming Mesa is broadly strict or permissive.

This guide is based on Mesa's current municipal code. Local rules can and do change, so check the individual ordinance pages for the latest details, penalties, and FAQs.