9 county-level rules, plus city-specific rules for 2 cities in Montgomery County, Pennsylvania.
Verified from official government sources
Montgomery County sets no countywide lawn-height limit. Grass and weed height is a municipal property-maintenance matter set by each of the county's 62 boroughs and townships. As an example, Montgomery Township (in the county) caps grass or weeds at 12 inches near buildings and in active subdivisions.
Montgomery Township, PA Code § 65-1 (Brush, Grass and Weeds)
No person or other legal entity owning or occupying any real property within the Township of Montgomery... shall permit any grass or weeds... to exceed a height of 12 inches in the following areas: Within an area of 100 feet from any portion of an occupied or unoccupied building.
Montgomery County sets no countywide tree-trimming rule for private yards. Street-tree trimming is a municipal function; many boroughs and townships appoint a Shade Tree Commission that, under the PA Shade Tree Act, has exclusive control over trimming trees in the public right-of-way. Private-yard pruning is generally unregulated.
PA Shade Tree Commission Act, Act of May 31, 1907, P.L. 349, §1 (53 P.S. §2811)
...a Commission of three freeholders, to be known and designated as the Shade-tree Commission... who shall have exclusive and absolute custody and control of, and power to plant, set out, remove, maintain, protect, and care for, shade-trees, on any of the public highways of the said townships, boroughs, and cities.
Montgomery County has no countywide private-tree-removal ordinance. Removing a tree on your own land is generally allowed without a county permit. Trees in the public right-of-way (street/shade trees) are controlled by your municipality's Shade Tree Commission under the PA Shade Tree Act, which holds exclusive authority to remove them.
PA Shade Tree Commission Act, Act of May 31, 1907, P.L. 349, §1 (53 P.S. §2811)
...who shall have exclusive and absolute custody and control of, and power to plant, set out, remove, maintain, protect, and care for, shade-trees, on any of the public highways of the said townships, boroughs, and cities.
Montgomery County sets no countywide weed ordinance. Noxious weeds and overgrown vegetation are a municipal property-maintenance nuisance handled by each borough and township. For example, Montgomery Township declares grass, weeds, or vegetation over 12 inches a nuisance and requires the owner to cut it within 10 days of notice.
Montgomery Township, PA Code § 65-2 (Brush, Grass and Weeds)
The growth of grass or weeds or other vegetation above the height of 12 inches within the Township of Montgomery in violation of § 65-1 is hereby declared a nuisance.
Montgomery County does not set a watering schedule. Pennsylvania is not under permanent western-style outdoor-watering rules. During dry spells, the PA Department of Environmental Protection issues drought watch, warning, or emergency declarations by county; watch/warning conservation is voluntary. Your local water supplier may add mandatory limits.
PA Department of Environmental Protection, Drought Watch declaration
While not required, residents and non-farm businesses are encouraged to voluntarily conserve water by reducing their nonessential water use.
Montgomery County has no ordinance restricting rainwater collection, and Pennsylvania does not limit rain barrels. Capturing rain for outdoor irrigation is allowed. Plumbed cistern or greywater systems must follow the Pennsylvania Uniform Construction Code and any municipal plumbing/stormwater permit requirements.
Montgomery County does not require or forbid native landscaping. There is no lawn mandate. The county and its municipalities encourage native, pollinator-friendly, and meadow plantings, and PA law lets municipalities regulate landscaping through zoning. Only your borough or township can require or limit specific plantings.
Montgomery County has no ordinance addressing artificial turf. There is no county ban and no county permit. Whether synthetic turf is allowed, and any impervious-surface or stormwater limits, is set by your borough or township zoning and stormwater code under the PA Municipalities Planning Code.
Montgomery County does not ban backyard composting; home composting is allowed. The county administers a Solid Waste Management Plan and mandatory municipal recycling under PA Act 101, which requires larger municipalities to offer recycling and can include yard-waste (leaf/grass) collection. Nuisance conditions are handled locally.
2 cities in Montgomery County have their own landscaping rules rules. Each link goes to that city's dedicated page with code citations.
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