Weed Ordinances: Gresham vs Portland
How do weed ordinances rules compare between Gresham, OR and Portland, OR?
Gresham and Portland have similar restriction levels.
Gresham, OR
Multnomah County
Multnomah County enforces noxious weed abatement under ORS 105.550 to 105.570 and Oregon Department of Agriculture OAR 603-052. Portland City Code 29.20 requires property owners to remove tall grass and noxious weeds over 10 inches. Armenian blackberry, English ivy, knotweed, and garlic mustard are priority invasives. The Portland Bureau of Development Services Nuisance Inspection Team handles complaints.
View full Gresham rules →Portland, OR
Multnomah County
Portland requires property owners to keep grass, weeds, and nuisance vegetation under 10 inches under PCC Title 29; the city can abate overgrown lots and lien the cost.
View full Portland rules →Key Facts Comparison
| Fact | Gresham | Portland |
|---|---|---|
| Portland Limit | 10 inches grass/weeds | - |
| Authority | PCC 29.20; ORS 105.550 | - |
| Priority Weeds | Blackberry, ivy, knotweed | - |
| Enforcer | Portland BDS Nuisance Team | - |
| Cost | Owner pays + lien | - |
| - | - |
Highlighted rows indicate differences between cities.
Gresham FAQ
How tall can my grass be in Portland before I get cited?
PCC 29.20 requires visible grass and weeds to be kept under 10 inches. Taller is allowed only for intentional native meadow, food gardens, or erosion-control plantings.
What if my neighbor has out-of-control blackberry?
File a nuisance complaint with Portland BDS (portland.gov/bds/nuisance) or Multnomah County Code Compliance for unincorporated areas. Himalayan blackberry is a priority invasive.
Portland FAQ
Compare other topics
See how Gresham and Portland compare on other ordinance categories.
Want to add a third city?
Use our full comparison tool to compare up to three cities.
Open Comparison Tool