Landscaping Rules in Philadelphia, PA

If you live in Philadelphia or are thinking about moving there, landscaping rules are one of those things you probably won't think about until they affect you directly. Philadelphia has 7 specific rules on the books covering different aspects of landscaping rules, and some of them might surprise you.

Water Restrictions

Philadelphia has no permanent calendar or odd/even lawn-watering schedule. Outdoor irrigation is generally unrestricted, but during a Commonwealth drought emergency the Governor of Pennsylvania may prohibit watering lawns, gardens, shrubs, washing vehicles, and filling pools, as the City's Office of Emergency Management explains.

Key details: Permanent watering schedule: None in Philadelphia. Restriction trigger: PA Governor's drought declaration. City publisher: Philadelphia Office of Emergency Management. Emergency lawn watering: Prohibited (except new seed/sod 5 p.m.-9 a.m. by hand). Water utility: Philadelphia Water Department (Delaware & Schuylkill Rivers).

During a Drought Watch or Warning the conservation measures are voluntary. When the Governor declares a Drought Emergency, non-essential water-use prohibitions become mandatory statewide and are enforceable under the Commonwealth's emergency-management and water-rationing authority; penalties are set by the emergency declaration rather than a permanent Philadelphia ordinance.

Weed Ordinances

Philadelphia Property Maintenance Code Section PM-302.4 bars weeds or plant growth over 10 inches and prohibits all noxious weeds. After a Notice of Violation, an owner who fails to cut and destroy the weeds is subject to prosecution, and the City may enter the property, remove the weeds, and charge the cost to the owner.

Key details: Code Section: Philadelphia PM Code Sec. PM-302.4 (Weeds). Limit: No weeds/plant growth over 10 inches; noxious weeds banned. Definition of weeds: All grasses, annual plants, and vegetation (not trees/shrubs/gardens). Prosecution basis: Subcode A, The Philadelphia Administrative Code. City abatement: City cuts weeds and charges cost to owner.

Upon failure of the owner or agent having charge of a property to cut and destroy weeds after service of a notice of violation, they are subject to prosecution in accordance with Subcode A (The Philadelphia Administrative Code) and as prescribed by the authority having jurisdiction. Upon continued failure to comply, any duly authorized City employee or contractor may enter the property and cut and destroy the weeds, with the cost of removal paid by the owner or agent responsible for the property.

Compared to other cities, Philadelphia takes a harder line on weed ordinances. The enforcement and penalty structure reflects that.

Tree Trimming

Philadelphia Parks & Recreation has exclusive control of all street trees under Philadelphia Code Section 15-203. A private owner may trim, prune, or remove the street tree abutting their property only after obtaining a permit from the Department, and any contractor doing tree work must hold a Department permit, sign an indemnification agreement, and carry liability insurance. Violations carry a minimum fine of $300 per day.

Key details: Code Section: Philadelphia Code Sec. 15-203 (Street Trees). Permitting authority: Philadelphia Parks & Recreation, Street Tree Management Division. Permit required to: Prune, cut down, or remove any street tree. Contractor requirements: Permit + indemnification agreement + liability insurance. Minimum fine: $300 per day, each day a separate offense.

Under Section 501 of the Parks & Recreation regulations, unauthorized pruning, cutting, or removal of a street tree is enforced by a notice of violation or code violation notice issued by a police officer, Fairmount Park Ranger, or other authorized officer. The penalty for violation of any provision is a minimum fine of $300 per day, with each day a separate offense; unpaid fines are entered as a judgment and may lead to contempt proceedings. Where these penalties conflict with other Philadelphia Code penalties, the stricter provision controls.

Compared to other cities, Philadelphia takes a harder line on tree trimming. The enforcement and penalty structure reflects that.

Native Plants

Any new landscaping placed inside Philadelphia's mandatory 50-foot waterfront setback has to come from the native and non-invasive planting list in the Water Department's Stormwater Management Guidance Manual, not just any nursery stock. The rule sits on top of a citywide standard requiring trees, shrubs, grasses, perennials and groundcover in required landscape areas to come from a list the City Planning Commission maintains, and compliant waterfront plantings count toward the site's overall landscape obligation.

Key details: Setback width: 50 ft from top-of-bank, mapped watercourses. Plant source: Native/non-invasive list in Stormwater Guidance Manual. Counts toward: Minimum landscape area under § 14-705. Citywide plant rule: Commission-approved list required, § 14-705(1)(c)(.1). Restoration exemption: Meadow/wetland creation exempt from landscape rules.

The native-planting rule is enforced through permit issuance rather than a standalone fine. Licenses and Inspections will not sign off on a zoning permit for a project subject to § 14-705(1) until the required landscape and tree preservation plan shows compliance and the City Planning Commission has approved it, so installing off-list or invasive species in the waterfront setback puts the whole zoning permit at risk, not just the planting itself.

Composting

Philadelphia zoning lets odorless composting equipment sit in required side and rear yards, but it must stay at least 2 feet off the property line.

Key details: Governing section: Philadelphia Code § 14-701. Lot-line buffer: 2 ft. minimum. Side yard width needed: At least 5 ft.. Enforcing agency: Dept. of Licenses and Inspections.

Placing composting equipment closer than 2 ft. to a side or rear lot line, or in a required side yard narrower than 5 ft., is a zoning encroachment the L&I Department can cite during a permit review or complaint inspection.

Philadelphia is more permissive than most cities when it comes to composting. That said, there are still limits.

Tree Removal & Heritage Trees

Under Philadelphia Code Section 14-705(1)(e), heritage trees on a development lot may not be removed unless the applicant replaces them per the tree-replacement standards or obtains a Zoning Board special exception. Healthy trees 2.5-inch DBH or larger removed during development generally must be replaced so the total caliper of replacements equals the total caliper removed.

Key details: Code Section: Philadelphia Code Sec. 14-705(1)(e)-(f) (Heritage Trees / Tree Replacement). Heritage tree removal: Needs replacement or Zoning Board special exception. Replacement trigger: Healthy trees 2.5-inch DBH or larger removed by development. Replacement standard: Total replacement caliper >= total caliper removed. Arborist exemptions: Dead, damaged, diseased, undesirable, or dangerous trees.

A zoning permit application that proposes to remove protected or heritage trees without meeting the replacement, exemption, or special-exception requirements will not receive the Planning Commission's prerequisite approval and cannot be issued by L&I. Preserved trees for which credit was awarded that are lost to damage or disease within two years must be replaced by the land owner with the trees otherwise required.

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

Rainwater Harvesting

Philadelphia zoning lets rainwater harvesting barrels encroach into required side and rear yards, but not within 2 feet of the lot line.

Key details: Governing section: Philadelphia Code § 14-701. Side yard minimum width: 5 ft to allow barrels. Lot-line setback: 2 ft minimum. Applies in: Residential, Commercial, Industrial, Special Purpose.

Placing a rain barrel within 2 ft of a side or rear lot line, or in a side yard narrower than 5 ft in residential districts, violates the § 14-701 yard encroachment standard and can be cited during a zoning inspection.

Philadelphia is more permissive than most cities when it comes to rainwater harvesting. That said, there are still limits.

The Bottom Line

Philadelphia is tougher than many cities when it comes to landscaping rules. Out of the 7 rules covered here, 3 are rated strict. If you are a homeowner, renter, or business owner in Philadelphia, take the time to understand these requirements before they become a problem. Most violations come with fines, and some repeat violations can escalate.

These rules come from Philadelphia's publicly available municipal code. For complete penalty schedules, exemption details, and answers to common questions, see the individual ordinance pages throughout this guide.