Weed Ordinances: Beaverton vs Tualatin

How tall can my grass be in unincorporated Aloha?

Under about 10 inches is safe. Above 12 inches typically triggers a nuisance notice, especially on vacant lots.

Can I clear blackberry vines along the creek behind my house?

Himalayan blackberry is invasive, but riparian buffers along Clean Water Services' sensitive areas require coordination before mechanical clearing.

What plants count as noxious in Tualatin?

TMC 6-04-060(3) lists uncontrolled blackberry bushes, tansy ragwort, poison oak, poison ivy, brush, and weeds or grasses that harbor vermin, shed noxious pollen, or create a fire hazard. Tall weeds taller than 10 inches also fall under the definition.

Do I have to clear weeds in the right-of-way?

Yes. TMC 6-4-090 expressly extends the owner's duty to the public right-of-way abutting the property. From March 1 through October 31 no owner may allow noxious vegetation either on the property or in that abutting right-of-way.

Can the city cut weeds and bill me?

Yes. If you do not cure a notice of violation, Tualatin may abate the noxious vegetation itself and bill the property owner for the work. Unpaid abatement charges can be assessed as a lien against the property.