Invasive Plant Rules in Montgomery County, MD (2026)
2 county-level rules, plus city-specific rules for 1 city in Montgomery County, Maryland.
Verified from official government sources
Prohibited Species
Montgomery County's zoning code (Ch. 59, § 59.6.4.3.A.6) bars any species on the Maryland Invasive Species Council's invasive list from required landscaping plans, enforced by withholding the final certificate of occupancy until compliant plants are installed.
Montgomery County Bans Invasive Species in Landscaping
Significant RestrictionsMontgomery County Code, Ch. 59 (Zoning Ordinance), § 59.6.4.3.A.6
Species included on the Maryland Invasive Species Council's list of invasive aquatic or terrestrial plants must not be used for landscaping. B. Landscaping Elements 1. Plant Material a. Any landscaping must be installed under the accepted standards of the American Standard for Nursery Stock, latest edition, as published by the American Association of Nurserymen. b. Plant material must b...
Tree-of-Heaven Removal
A county pesticide regulation names Ailanthus altissima (tree of heaven) as an invasive species that can be treated with registered pesticide within 25 feet of a waterbody on Parks Department land, an exception to the county's normal pesticide-use limits.
Montgomery County Tree of Heaven Pesticide Rule
Light RestrictionsCOMCOR 33B.00.01.07 (Invasive Species — Waterbody Environments)
A waterbody environment is any area of land managed by the Parks Department within 25 feet of a waterbody that is subject to the pesticide use restrictions under Section 33B-14 of the Code. A person may apply a registered pesticide to control these species in a waterbody environment. Registered pesticides may only be applied directly to these species when they are present, and must not be used ...
Invasive Plant Rules by City in Montgomery County
1 cities in Montgomery County have their own invasive plant rules rules. Each link goes to that city's dedicated page with code citations.
All Montgomery County ordinances
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