Landscaping Rules in Boston, MA

Boston maintains 135 local ordinances across all categories, and 4 of those deal specifically with landscaping rules. Here is a breakdown of what the city actually requires, what is prohibited, and where Boston falls on the strict-to-permissive spectrum compared to other cities.

Weed Ordinances

Boston property owners must remove rank weeds, invasive vegetation, and sidewalk weeds under City Code Ch. 16. Noxious weeds on the Massachusetts Prohibited Plant List cannot be planted.

Key details: Sidewalk: Owner maintains. State Ban List: MA Prohibited Plants. Hazard Removal: 30 days. Enforcer: ISD Environmental.

Tree Trimming

Boston Code § 7-4.7(D) puts the Commissioner of Parks and Recreation in charge of trimming shade trees standing in the street so they don't interfere with public travel or street lighting, and of enforcing the tree-protection ordinances.

Key details: Governing section: Boston Code § 7-4.7(D). Responsible official: Commissioner of Parks and Recreation. Trimming triggers: Public travel or street-lamp interference. Related state authority: M.G.L. Chapter 87, § 13.

Section 7-4.7(D) is framed as a municipal duty rather than a private-party prohibition; it does not itself set a fine schedule. Trimming or removal of a public shade tree outside the Commissioner's routine clearance authority, without Tree Warden approval, is enforced under the removal-permit provisions of § 7-4.7(F)-(G).

If you are coming from a city with tighter rules, you will find Boston gives residents more flexibility on tree trimming.

Native Plants

Boston encourages native plantings through Article 37 green building standards and the Grow Boston Greener program. No ordinance mandates native plants on private lots.

Key details: Private Mandate: None. Large Projects: Article 37 encouragement. Wetland Buffer: Natives preferred. Invasive Ban: State Prohibited Plant List.

If you are coming from a city with tighter rules, you will find Boston gives residents more flexibility on native plants.

Tree Removal & Heritage Trees

No one may cut, trim, or remove a public shade tree in Boston without written approval from the city's Tree Warden, per Code of Ordinances § 7-4.7(F). Healthy trees removed with permission must be replaced near the original site, or the property owner pays a $550-per-caliper-inch replacement fee to the Parks and Recreation Department's tree fund.

Key details: Approval required: Written Tree Warden approval before removal. Replacement fee: $550 per caliper inch (DBH). Replacement warranty: At least 2 years, on/near original site. Exempt trees: Dead, dying, diseased, invasive, or pest-hosting. City property trees: Removal needs a noticed public hearing.

Cutting, trimming, or removing a public shade tree without the Tree Warden's prior written approval violates § 7-4.7(F)(1). The Parks and Recreation Commission may adopt regulations under § 7-4.8 and fix penalties for breaches of tree-canopy rules, and an owner who removes a healthy tree without arranging on-site replacement still owes the $550-per-caliper-inch fee. Removing a city property tree without a noticed public hearing violates § 7-4.7(G).

This is not one of those rules that cities tend to ignore. Boston actively enforces its tree removal & heritage trees requirements.

The Bottom Line

Compared to many U.S. cities, Boston gives residents more room on landscaping rules. 2 of the 4 rules here are rated permissive. But permissive does not mean unregulated. There are still requirements, and the city does enforce them when violations are reported.

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