Stump grinding in Canby, Oregon

Before the grinder arrives in Canby

ODF and ODA confirm emerald ash borer in Clackamas County and have it under quarantine. Raw ash wood, stumps included, may not leave the quarantine; it can move only as chips of 1 inch or less, as kiln-dried debarked lumber, or after a 160F core heat treatment for 60 minutes with ODA permission. Cover any load hauled between April 1 and September 30.

Next, call 811 so buried lines are marked before the grinder bites below grade. Canby has no private tree permit, but a stump in the public right-of-way is part of a street tree, and CMC 12.32.060 requires a permit before removing one; the replacement comes from the Canby Street Tree List.

What stump grinding costs in Canby

Stump size, roots that run under a driveway and how close a machine can get set where a Canby job lands in the modeled range below. Haul-away adds cost when the wood is ash, since grindings must stay inside the quarantine; leaving them on site is usually cheaper.

BLS puts the Portland-Vancouver-Hillsboro mean wage for tree workers at $35.04 an hour across 1,160 workers. It is a labor input to the model, not a price.

Modeled at $4 to $6 per inch of diameter with a $150 minimum, rounded to $50. Modeled estimate, not quotes (method).

Source: BLS Occupational Employment and Wage Statistics, May 2025, SOC 37-3013. Checked 2026-10-02.

Grindings, wood and quarantines

Oak brings its own rule. Mediterranean oak borer is confirmed in Clackamas County, though not under quarantine; an infested oak should be cut and then burned or chipped to 1 inch or less on site, stump included, and cut oak firewood should not travel more than 10 miles. Report suspect ash or oak to the Oregon Invasive Species Online Hotline.

Burning falls under Oregon DEQ rules; see the Oregon burn rules. Canby’s code also bans topping street trees, so a replacement tree should be pruned, not cut back hard. Read the Oregon EAB page to identify ash.

Replanting the spot

Clackamas County ranks 8th of Oregon’s 36 counties with 198 NOAA storm reports, and heavy snow leads at 64. Two-thirds of reports fall between November and February, so storm-broken trees leave a crop of winter stumps; grinding them in the dry months is easier on lawns.

Canby sits in hardiness zone 8b. Street-tree replacements come from the city list, and new development plants one street tree per 30 feet of frontage.

Hardiness zone 8b. Grinding vs full removal: which one you need.

Source: USDA Plant Hardiness Zone Map 2023 (OSU PRISM ZIP data). Checked 2026-10-02.

What to do next

Check the species first, since ash and oak have disposal rules here, then call 811. For a right-of-way stump, get the Street Tree Cut Permit through Development Services. Verify any contractor in the Oregon license lookup guide, then call the number on this page to compare grinders working around Canby.

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