Rockville, MD Landscaping Rules: Weed Ordinances (2026)

Rockville's weed control requirements are part of the Property Maintenance Code adopted under Chapter 5, Article XII of the city code. Section 5-287 establishes exterior property standards requiring owners and occupants to maintain premises free of excessive vegetation. Weeds and plant growth exceeding 10 inches in height are considered a violation. The definition of weeds is broad, covering all grasses, annual plants, and vegetation, but excludes trees, shrubs, and cultivated flowers and gardens from the height restriction. This distinction allows homeowners to maintain ornamental gardens, intentional native plantings, and landscaped areas without triggering enforcement action. The responsibility extends to the public right-of-way adjacent to the property, including the grass strip between the sidewalk and curb. Rockville's Community Enhancement Code Enforcement division enforces the ordinance through curbside inspections and resident complaints. Inspectors typically issue a notice of violation allowing time for correction before pursuing fines. The city may also address noxious weeds that pose allergen or health risks, such as ragweed and poison ivy, under the broader property maintenance framework.