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Brush clearing & weed abatement
Bush hogging, discing, fire breaks and brush mulching on the Central Coast, done before your fire agency's deadline by operators who know the ground.
Last updated November 2, 2026 · Request work
What it coversMethodsWhenRules by countySafetyFAQ
What brush clearing covers
Most Central Coast landowners call about clearing for one of three reasons. One is a weed abatement notice or the June 1 deadline. Another is defensible space around a house or barn, either before fire season or before selling in a fire hazard zone. The third is reclaiming land that has grown over: pasture going to coyote brush, an old orchard, or a fence line lost under poison oak. TractorWork matches you with local operators who bring the right machine for your ground.
- Mowing annual grass and weeds to 4 inches across a whole parcel or in zones
- Perimeter fire breaks, such as the 30-foot break required on SLO County parcels of an acre or more
- Roadside and driveway clearance: 10 feet each side and 13 ft 6 in overhead in Santa Barbara County
- Bush hogging tall weeds, mustard, thistle and young brush
- Mastication (mulching) of coyote brush, chamise, ceanothus and scrub oak
- Discing or rototilling fire breaks and farm-edge strips
- Limbing up trees and removing ladder fuels, often paired with a chipper
- Clean-up of downed limbs, old fencing and debris piles
Methods compared
| Method | Best for | Leaves | Watch out for |
|---|---|---|---|
| Flail or rotary mower (bush hog) | Grass, weeds and brush up to ~2 in stems | Cut stubble and mulch on the surface | Rocks (sparks), slope limits |
| Disc / harrow | Flat farm parcels and fire breaks | Bare, worked soil | Dust and erosion. May count as vegetation removal over 1 acre in SLO County |
| Rototiller | Small breaks, gardens, arenas | Fine, loose soil | Slow on big areas |
| Forestry mulcher (track machine) | Heavy brush, chaparral, small trees | Chip mulch layer | Higher cost per acre. Nesting birds in spring |
| Hand crew and chipper | Very steep ground, around structures, oaks | Chips or haul-off | Labor cost |
Operators often combine methods: a mower across the open ground, hand work around the house, and a mulcher on the brushy hillside.
When to schedule
On the Central Coast, annual grasses green up with the first rains in November or December, grow fast in February and March, and cure in April and May. The best clearing window is late March through May. Clear too early and you may need a second pass after spring rain. Wait until July and you're mowing cured grass in peak fire weather, and you've probably missed your deadline. Book by March or April: operators' calendars fill up for May and June.
If you're clearing heavy brush or trees in spring, check for nesting birds. Nesting season runs roughly February through August, and state and federal law protect active nests. Many operators schedule brush mastication for late summer or fall, outside nesting season, and handle grass in spring.
Deadlines and rules by county
| County | Who enforces | Deadline / timing | Key standard |
|---|---|---|---|
| Monterey | CAL FIRE BEU, Monterey County Regional Fire and other local districts | Before late-spring / early-summer inspections. Check your district's notice | 100 ft defensible space. Grass to 4 in |
| San Luis Obispo | CAL FIRE / SLO County Fire; city fire departments | Cities June 1 (Morro Bay June 15). County: 15 days after a Notice to Abate | 100 ft around structures. 30-ft perimeter break on parcels ≥ 1 acre, cut to 4 in |
| Santa Barbara | Santa Barbara County Fire (Montecito and Carpinteria-Summerland have their own districts) | June 1. Inspections begin | 100 ft. 10 ft each side of roads. 13 ft 6 in overhead |
The full CAL FIRE zone breakdown and a printable checklist are in the defensible space clearing guide.
Safety and good practice
- Mow early in the day. CAL FIRE's "One Less Spark" guidance is to mow before 10 a.m., and never when it's hot, dry and windy. Metal blades striking rock cause fires every summer.
- Spark arresters. California law (PRC 4442) requires spark arresters on internal-combustion equipment used on brush- or grass-covered land.
- Carry water and a shovel or extinguisher on the machine, and watch the area after you finish.
- Protect slopes and creeks. Mow instead of disc on slopes, keep out of stream channels, and leave a mulch layer where erosion is a risk.
- Mark hazards: irrigation, septic lids and leach fields, wells, stumps and survey pins.
- Check burn rules with your air district before burning piles. Chipping or mulching avoids the question.
Cost
Open grass usually runs about $100 to $250 an acre, tall weeds with brush $200 to $500, and heavy chaparral mastication $1,200 to $4,000 or more an acre. Hourly rates and minimums are in the pricing guide.
FAQ
What is the difference between bush hogging, discing and mulching?
A bush hog (rotary cutter) mows grass and brush and leaves the cuttings on the ground. Discing turns the vegetation into the soil and leaves bare dirt. Mulching, or mastication, grinds heavy brush and small trees into chips. It's slower and costs more, but it leaves a protective layer on the ground.
Is discing or mowing better for weed abatement?
Mowing to 4 inches keeps roots in place and reduces erosion and dust, so it's the better choice on slopes and near creeks. Discing lasts longer through the season and is common on flat farm parcels. Santa Barbara County Fire accepts discing and rototilling. In SLO County, scraping more than an acre down to bare soil can count as vegetation removal under the grading rules.
When should I clear brush on the Central Coast?
Late March through May, after the grass heads out but before it is fully cured. That gets you done before June 1 deadlines. Mow in the morning and avoid hot, windy days.
Can operators clear brush on steep slopes?
Wheeled tractors are usually limited to moderate slopes. Steeper ground needs a tracked machine with a mulching head, or hand crews. Tell us the slope and send photos so the right operator calls.
Do I need a permit to clear brush?
Routine fire clearance generally doesn't need a grading permit. Large-scale removal down to bare soil, work in creeks or drainages, or oak removal can trigger county grading or tree rules and state Fish and Wildlife rules. See the county pages for details.
Sources & official links
- CAL FIRE — Defensible space (Ready for Wildfire)
- Board of Forestry — Defensible Space Zones 0, 1 and 2 (Zone 0 rulemaking status)
- CAL FIRE / OSFM — Fire Hazard Severity Zone maps
- Monterey County Regional Fire District — Wildland inspection program
- CAL FIRE / San Luis Obispo County Fire — County hazard (weed) abatement
- Santa Barbara County Fire — Defensible Space Program
- Santa Barbara County Fire — Defensible space deadline is June 1
Rules change. Always confirm with the agency before you start work. Last checked November 2, 2026.