Herbicide Tracker California

California Herbicide Tracker

California forestry pesticide records

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Find what was sprayed, where it was applied, who reported it and how much was used. Search by address or county, or explore the statewide record directly.

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County records are on the way. We are awaiting forestry herbicide records requested from California counties through CPRA. The Tracker will be populated as records arrive and are reviewed over the next 30–60 days.

Published record dashboard · 2021–2026

What the records show.

Live totals from the pesticide use reports currently published in the tracker.

Open full totals dashboard
Reported application acreage
55,110acres

Forestry herbicide applications in the published record.

1,223applications
6years represented
Herbicide quantities

How much was applied

Liquid product
22,668.1gallons
Dry product
5,011.2pounds

Product amounts as reported. Gallons and pounds are shown separately.

Additional amounts in unresolved units are listed in the full dashboard.

Reported application acreage

Air or ground

Aerial3 apps
407acres

0.7% of reported acreage

Ground1,220 apps
54,703.3acres

99.3% of reported acreage

Explore applications

Application acres count each application; the same land can appear more than once.

Community spray notifications

Know before forestry herbicides are sprayed near you.

We are building advance alerts for planned forestry herbicide treatments, plus record alerts when official application records arrive in the Tracker.

How notifications will work
Coming soon · County purchasing records

What counties spend. Who they buy from.

Explore county spending
Explore the record

Start with the view you need.

Every application page traces back to source records obtained from county agricultural commissioners.

01

Statewide map

See published application locations and open the underlying record.

Open map
02

Applications

Browse treatment dates, acreage, methods, companies and products.

Applications
03

Chemicals

Follow active ingredients across applications and years.

Chemicals
04

Totals

Compare reported herbicide use and acreage over time.

View totals
County records

Browse California by county.

See all 58 counties
Butte750 applications35,919 acresView countyDel Norte388 applications6,520 acresView countyLassen84 applications12,668 acresView countySanta Cruz1 application4 acresView county
Latest records

Most recent applications.

See all applications
DateApplication / reported siteOwnerReported operator / permitteeApplicatorAcresChemicals appliedUse siteMethod
Sep 26, 2026Report WEB2621469564
Butte County
N/ASILLER BROS. INC.REFORESTATION LOGISTICS, LLC75Glyphosate, isopropylamine salt, Imazapyr, isopropylamine salt
ALLIGARE ROTARY 2 SL, ROUNDUP PRO CONCENTRATE HERBICIDE
+ 1 tank additive
DPR Water Protection List
Forestry / timberlandGround
Sep 25, 2026FEATHER FALLS
Butte County
SIERRA PACIFIC INDUSTRIESSIERRA PACIFIC INDUSTRIESACC FORESTRY LLC50Glyphosate, diammonium salt, Triclopyr, triethylamine salt
DREXEL DUPLICATOR 6 HERBICIDE, GARLON 3A
+ 1 tank additive
Forestry / timberlandGround
Sep 25, 2026LOMO
Butte County
SIERRA PACIFIC INDUSTRIESSIERRA PACIFIC INDUSTRIESACC FORESTRY LLC35Glyphosate, diammonium salt, Imazapyr, isopropylamine salt
ALLIGARE ROTARY 2 SL, DREXEL DUPLICATOR 6 HERBICIDE
+ 2 tank additives
DPR Water Protection List
Forestry / timberlandGround
Sep 25, 2026BUTTE MEADOWS
Butte County
SIERRA PACIFIC INDUSTRIESSIERRA PACIFIC INDUSTRIESACC FORESTRY LLC15Glyphosate, diammonium salt, Triclopyr, triethylamine salt
DREXEL DUPLICATOR 6 HERBICIDE, GARLON 3A
+ 2 tank additives
Forestry / timberlandGround
Sep 25, 2026FEATHER FALLS
Butte County
SIERRA PACIFIC INDUSTRIESSIERRA PACIFIC INDUSTRIESACC FORESTRY LLC36.9Glyphosate, diammonium salt, Triclopyr, triethylamine salt
DREXEL DUPLICATOR 6 HERBICIDE, GARLON 3A
+ 1 tank additive
Forestry / timberlandGround
Sep 25, 2026FEATHER FALLS
Butte County
SIERRA PACIFIC INDUSTRIESSIERRA PACIFIC INDUSTRIESACC FORESTRY LLC5Glyphosate, diammonium salt, Triclopyr, triethylamine salt
DREXEL DUPLICATOR 6 HERBICIDE, GARLON 3A
+ 1 tank additive
Forestry / timberlandGround
Sep 24, 2026Report WEB2621491551
Del Norte County
N/AGREEN DIAMOND RESOURCESHighlanders Forest LLC30Clopyralid, monoethanolamine salt, Sulfometuron-methyl, Triclopyr, butoxyethyl ester
GARLON XRT, OUST XP HERBICIDE, TRANSLINE
+ 1 tank additive
DPR Water Protection List
Forestry / timberlandGround
Sep 24, 2026FEATHER FALLS
Butte County
SIERRA PACIFIC INDUSTRIESSIERRA PACIFIC INDUSTRIESACC FORESTRY LLC7Glyphosate, diammonium salt, Triclopyr, triethylamine salt
DREXEL DUPLICATOR 6 HERBICIDE, GARLON 3A
+ 1 tank additive
Forestry / timberlandGround
Sep 24, 2026FEATHER FALLS
Butte County
SIERRA PACIFIC INDUSTRIESSIERRA PACIFIC INDUSTRIESACC FORESTRY LLC38Glyphosate, diammonium salt, Triclopyr, triethylamine salt
DREXEL DUPLICATOR 6 HERBICIDE, GARLON 3A
+ 1 tank additive
Forestry / timberlandGround
Sep 24, 2026FEATHER FALLS
Butte County
SIERRA PACIFIC INDUSTRIESSIERRA PACIFIC INDUSTRIESACC FORESTRY LLC41Glyphosate, diammonium salt, Triclopyr, triethylamine salt
DREXEL DUPLICATOR 6 HERBICIDE, GARLON 3A
+ 1 tank additive
Forestry / timberlandGround
MAPPED LOCATIONSPUBLIC RECORDSCHEMICALSOPEN DATATRACE THE SOURCE
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California forestry herbicide and pesticide records