Find a Certified Arborist

What is a Certified Arborist?

The Certified Arborist is trained and knowledgeable in all aspects of arboriculture. ISA Certified Arborist have met all requirements to be eligible for the exam, which includes three or more years of full-time, eligible, practical work experience in arboriculture and/or a degree in the field of arboriculture, horticulture, landscape architecture, or forestry from a regionally accredited educational institute. This certification covers a large number of topics giving the candidates flexibility in the arboricultural profession. They also abide by a code of ethics as an ISA Certified Arborists which strengthens the credibility and reliability of the work force. This certification is accredited by the American National Standards Institute, meeting and exceeding ISO 17024.

 

NOTICE TO USERS OF THE ISA CERTIFIED ARBORIST CERTIFICANT LIST

This tool is intended to help homeowners and consumers find ISA Certified Arborists in their local areas. The information in this tool may not be used for any commercial purpose, including gathering contact information with the intent to make business contacts.

Key
BCMA = Board Certified Master Arborist
CA = Certified Arborist
US = Utility Specialist
MS = Municipal Specialist
CTW = Certified Tree Worker
ARLS = Aerial Rescue Lift Specialist
TR = Tree Risk Assessment Qualification

 

NAME
COMPANY
CITY
ST
ZIP
PHONE
CERTIFICATION
Aaron Bitter ZauberMountain Tree CareGoldenCO80403303-443-9430CA
Aaron RodolphRodolph Borthers TreesCasperWY82602307-259-2177CA
Abraham SpilsburyLittletonCO80120510-724-6956CA
Al PadovaCJ's LandscapingGilletteWY82716307-682-8506CA
Al WegnerMtn. High Tree Care & ConsultingColorado SpringsCO80910719-444-8800CA, CTW
Alan GilbertYellowstone Tree CareBig TimberMT59011406-932-5581CA
Alan Gregory AbbottCity of AuroraAuroraCO80012918-766-1145CA, CTW
Allan J DuckworthNorthglennCO80241303-280-7822CA
Allen BensalAllen Bensal, Consulting ArboristGlendaleAZ85304623-979-8080CA
Amanda IrlbeckMandy's Tree CareBozemanMT59718406-580-4106CA
Amos ArberAlbuquerque Botanic GardenAlbuquerqueNM87104505-401-4164CA
Andrew GalantiGalanti Lawn & Tree Care LLCKalispellMT59901406-257-1153CA
Andrew HubingMissoulaMT59808406-880-9103CA
Andrew KirkengCampbell County Parks & Rec.GilletteWY82718307-686-3851CA
Andrew MitchellAM Arborcare LLCLivingstonMT59047207-812-0069CA, MS
Andrew YoungCedar Mountain Tree CareLanderWY82520307-438-0548CA
Andy KoepelCity of Longmont ForestryLongmontCO80501303-774-4385CA, CTW
Angela JensonTerra Firma ForestrySalidaCO81201719-539-4944CA
Anne BeardPublic Service Co. of NMAlbuquerqueNM87107505-241-3644CA, US
Anthony BedellLyonsCO80540720-302-3648CA
Anthony D. WagnerEnglewoodCO80113720-590-2196CA
Anthony Joseph HahnSwingleDenverCO80231720-641-0454CA
Bannon LundyDavey Tree Surgery Co.Colorado SpringsCO80918719-641-2258CA, US
Barbara E. PopelkaYellowstone Valley Tree SurgeonsBillingsMT59108406-670-7449CA
Barbara RussellAlbuquerqueNM87105505-833-2108CA
Ben HelmsCity of Fort CollinsFort CollinsCO80521706-531-5035CA
Ben MaddoxMaddox Outdoor SolutionsArroyo SecoNM87514505-776-2275CA
Ben WrightTaosNM87571575-770-8454CA
Benjamin CarlsenCity of AspenAspenCO81611970-429-2034CA, TR
Benjamin CarsonCity of Missoula Pks Maint FacilityMissoulaMT59801406-243-2183CA
Betsy MercerTown of ParkerParkerCO80134303-805-3213CA
Bill ClarkCity of LakewoodArvadaCO80003303-422-0329CA
Bill FieldsCampbell County Parks & Rec.GilletteWY82718307-686-5187CA
Blake E. McGrewWindsorCO80550970-674-2440CA
Brad HoyCity of Ft Collins ForestryFort CollinsCO80526970-221-6660CA, ARLS
Bradley Roger HuddlestonSplintered Forest LLCEvergreenCO80439303-819-9840CA
Bradley StaceyUniversity of MontanaMissoulaMT59812406-243-2183CA
Bradly HanksMorrisonCO80465720-220-3237CA
Brent SarchetMSU ExtensionHelenaMT59602406-447-8350CA
Bret A. LynchSafari Tree and LandscapeBroomfieldCO80021303-464-1613CA
Brett LeMaireDavey Tree ExpertsCastle RockCO80109303-885-3800CA
Brian BergEstes ParkCO80517262-989-9229CA
Brian J. WelchLamborn Landscapes & Tree CareErieCO80516720-441-9595CA
Brian O'NielDavey Tree "Boulder Co"LittletonCO80130(303) 994-3856CA
Brian OkamotoOkamoto Arbor CareKalispellMT59903406-756-1890CA
Brian RoundyTown of Castle RockCastle RockCO80109303-435-2200CA
Bruce HoffmanCommon ScentsMcCookNE69001308-345-1541CA
Bruce JalbertDavey TreeAuroraCO80011303-750-9273CA
Bruce L. RasorSuburban Tree & ShrubArvadaCO80003303-422-1568CA
Bryan L McCoyDenverCO80220303-801-8206CA, CTW
Bryan SuhrUniversity of New MexicoAlbuquerqueNM87114505-898-2130BCMA, MS, US
Bryn ItenLovelandCO80538309-202-6771CA
Caleb JonesArbor RootsWheat RidgeCO80033303-582-4758CA, CTW
Caleb PalmerHighlands Ranch Metro DistrictHighlands RanchCO80129720-541-3403CA
Casey Aaron SidlesCity of AuroraAuroraCO80012720-317-5866CA
Casey Peter KralovetzGallatin GatewayMT59730920-627-1212CA
Catherine D. ThiltgenBoulder County Parks & OSLongmontCO80503303-722-5597CA
Chad A. RuckerBrightonCO80601303-907-5185CA, US, TR
Chad DelzellDenverCO80211720-275-0062CA
Chad StreetBees & TreesLongmontCO80502303-669-9520CA, CTW
Charles A. WagnerCutting Edge Tree CareLafayetteCO80026303-362-1002CA
Charles CarlinoPuebloCO81005719-320-4063CA
Charles EricksonGoldenCO80403630-779-4018CA
Charles GehringerCity & County of BroomfieldBroomfieldCO80020303-464-5655CA, TR
Charles MullinsElk Creek Lawn & Tree CareGoldenCO80402303-384-1100CA, TR
Charles Nathan HankinsAuroraCO80010859-250-0321CA, CTW
Charlie AdamsCypress ArboricultureDenverCO80221307-620-1192CA, CTW
Chris AbbeDavey TreeEnglewoodCO80112303-843-9413CA
Chris HackettBig Horn Tree & Shrub CareCodyWY82414307-899-5381CA
Chris PierceArborilogical WestPagosa SpringsCO81157-4699970-731-3846CA
Chris ReinholtReinholt Tree CareLongmontCO80504303-931-9283CA
Chris TonelliTown & Country TreesLittletonCO80120303-400-8250CA
Chris WeydeveldTechnical Forestry ServicesCasperWY82604307-333-1098CA
Christine PhillippsAAA Emergency Tree SvcDenverCO80209303-623-6851CA
Christine RomeroDenver Parks & RecreationDenverCO80202720-913-0649CA
Christopher A. BozaChattaroyWA99003509-238-4043CA, MS, ARLS
Christopher BernhardtNorthwestern EnergyButteMT59701406-497-2797CA
Christopher CoeUniversity of Montana-Grounds DepartmentMissoulaMT59812406-439-0223CA
Christopher HiceKimley-Horn and AssociatesDenverCO80209303-228-2300CA
Christopher L EckhartRoots Treecare and NurseryFort CollinsCO80524970-689-2305CA
Christopher LichtyCity of LouisvilleLouisvilleCO80027303-335-4733CA, TR
Christopher M. RichTaking Root Tree Care LLCBoulderCO80305720-530-7439CA
Clay GarnerDesert GardensAlbuquerqueNM87105505-877-7655CA
Cliff MulkeyCity of ThorntonBroomfieldCO80020303-995-3779CA
Cody CaudillStonegate Lawn and LandscapeHobbsNM88240575-441-8526CA
Colin Dana JonesAugustine TreesLongmontCO80504207-344-5300CA
Conrad ArchibequeCity of CasperCasperWY82601307-235-8281CA
Cory GuthmillerRocky Mountain Tree Care Specialists, Inc.Black EagleMT59414406-771-8733CA, TR
Court R. SherwoodSwingleDenverCO80212303-910-1816CA, TR
Craig BachmannMountain High Tree ServiceDenverCO80210720-328-3116CA
Craig J. LittleWestminsterCO80031303-249-6879CA, TR
Craig McCloskeyFort CollinsCO80526970-988-6012CA
Craig R. MillerParkerCO80134303-688-8550CA
D. Ryan MatneyAnimas Valley ArboristFarmingtonNM87402970-759-3291CA
Damon SalceiesPNMAlbuquerqueNM87107505-241-3632CA, US
Dan E. HumblesThe GroundskeeperAlbuquerqueNM87120505-379-7484CA
Dan JendralWestern Tree ManagementSteamboat SpringsCO80477970-870-9755CA
Dan T. DanielsSheridanWY82801307-674-9568CA, US
Dan WilladsenTown of WindsorEatonCO80615970-590-3001CA
Daniel BridenstineLittletonCO80120435-770-3369CA
Daniel CottierGreenman Urban Forestry Consultants, Inc.LongmontCO80501720-343-6000BCMA, MS, CTW, US, ARLS, TR
Daniel DeweyCity of Greeley - Forestry DivisionGreeleyCO80634970-339-2405CA
Daniel FinnCity of LafayetteLafayetteCO80026720-641-7045CA
Daniel GjertsonArbor CycleNederlandCO80466612-384-5165CA
Daniel J. LeeCity of LakewoodMorrisonCO80465303-697-5510CA
Daniel LimbertBroomfieldCO80020303-725-6662CA
Daniel LizarribarBoulderCO80301786-371-5144CA
Daniel MikaCity of Rawlins Parks & Rec.RawlinsWY82301307-328-4512CA
Daniel R. LaValleyRoots Treecare & Nursery LLCFort CollinsCO80521970-682-4785CA, MS, CTW, US, TR
Daniel Reisdorfer, Sr.Evergreen Lawn & Tree CareCheyenneWY82009307-775-0365CA
Dario ElliottTree Tamers Inc.GunnisonCO81230970-707-4067CA
Darrel A. PearsonAnderson TreeColorado SpringsCO80919719-460-0543CA
Darrin D. ScottTown of OlatheDeltaCO81416970-210-4695CA, MS
Daryl MoorehouseArvadaCO80004720-299-5657CA
Dave C. CarpenterTall Timbers Tree & Shrub Svc.Colorado SpringsCO80908719-528-8141CA
Dave GrieveTaddiken Tree CompanyWestminsterCO80030720-384-8793CA, TR
Dave LeeEnglewoodCO80110303-762-2687CA
David A. StrickerPublic Service Co. of NMAlbuquerqueNM87107505-241-3627CA, US
David AppelhansLogan County Pest Control DivisionSterlingCO80751970-522-3200CA
David BoswellArvadaCO80005801-604-8611CA
David CoonTown of Carbondale Public WorksCarbondaleCO81623970-510-1331CA
David DeyarmondAspen Tree ServiceAspenCO81612970-963-3070CA
David FlaigCity of LittletonLittletonCO80165303-795-3766CA, MS
David FulfordAsplundh Tree Expert Co.GoldenCO80403303-215-1025CA
David JordanJordan's Tree Moving & Maint.Fort CollinsCO80524970-482-6331CA
David KalyanLyonsCO80540303-449-2525 x307CA
David KinserCity of Wheat RidgeWheat RidgeCO80033303-205-7556CA
David LentzLarimer County ForestryFort CollinsCO80522970-498-5765CA
David MerrimanArborScapesMorrisonCO80465303-795-2381CA
David ParicioDavey Tree ExpertsLakewoodCO80227303-877-8857CA
David RichardsonAsplundh TreeColorado SpringsCO80906719-473-1814CA
David S. AusraWoodland ParkCO80863719-216-1745CA
David S. HighCity of GoldenGoldenCO80401303-384-8141CA, MS
David SchindlerCheyenne Urban ForestryCheyenneWY82001307-637-6428CA
David SextonCity of Fort Collins - Forestry DivisionFort CollinsCO80521970-224-6117 CELLCA, CTW, ARLS, TR
David VathCity of WestminsterWestminsterCO80031303-658-8241CA
David VoegeleArbor Tech Tree ServiceBillingsMT59101406-651-9059CA
David WalkerWalker Tree Care LLCBlack HawkCO80422720-480-0398CA, TR
Debra Strawbridge-PfaffCity & County of BroomfieldBroomfieldCO80021303-460-7604CA
Del BernhardtCity of Fort Collins ForestryFort CollinsCO80521970-221-6306CA
DelMar BartonCity of Powell Parks & RecPowellWY82435307-754-6971CA, MS
Dennis F. DonovanHighlands Ranch Metro DistrictHighlands RanchCO80129303-791-2710CA
Dennis J. SheaArbortec Tree Service Inc.WestminsterCO80021303-435-9028CA
Dennis L. VoglerCedar Mountain Tree CareLanderWY82520307-332-7466CA
Devin SchmitColumbia FallsMT59912406-249-7167CA
Devon BowersCity of WestminsterWestminsterCO80031303-658-2284CA
Devyison Della GiustinaDeyvis Tree & Shrub CareLittletonCO80127720-224-8200CA
Don D. HarterGilletteWY82716307-686-1171CA
Donald LovatoTrees, Inc.AlbuquerqueNM87120505-975-4085CA, US
Donald R. Meshell, Jr.GoldenCO80401720-737-9728CTW
Donald S. NalleyNew CastleCO81647970-366-8143CA
Donald StintonStinton Enterprises, Inc.WaldenCO80480970-723-4636CA
Donna H. DavisColorado State Forest ServiceLa JuntaCO81050719-383-5780CA, TR
Donna HoffmanNatrona County Coop. Ext. ServicesCasperWY82604307-235-9400CA
Douglas Frederick ThiesBig Paws Lawn CareCheyenneWY82003307-631-0078CA
Douglas Hewitt3D Tree CareLongmontCO80503720-352-6774CA, TR
Douglas LyonsColorado Springs UtilitiesPenroseCO81240719-668-5534CA, US, MS
Douglas RogakisNorthern Colorado Water Conservation DistrictBerthoudCO80513970-532-7700CA
Doulgas MacDonaldGrand JunctionCO81506970-257-9727CA
Dustin BrownBlue River Forestry & Tree CareLongmontCO80501720-256-9056CA
Dustin CoyFort CollinsCO80524970-482-6331CA
Edward GoebelLongmontCO80501720-352-1098CA
Elizabeth GardnerLas VegasNM87701505-454-0977CA
Elizabeth J. KuntzCity of GilletteGilletteWY82716307-686-5275CA, MS
Elizabeth PopelkaYellowstone Valley Tree SurgeonsBillingsMT59108406-656-5810CA
Emily BarnesLumber Jack & JillFort CollinsCO80526970-581-7190CA
Eric BishopEric's Tree CareAlbuquerqueNM87198505-232-2358CA, CTW
Eric C. MarlattMarlatt Tree CareChugwaterWY82210307-331-5102CA
Eric L. MaischExpert Tree CareKalispellMT59901406-257-0025CA
Erik SchneiderBozeman Tree CareBozemanMT59718406-579-0243CA
Erik StadsvoldTown of ParkerParkerCO80134303-805-3221CA, CTW
Erika L. WertzAuroraCO80012303-739-7882CA
Erin BurtchAlbuquerqueNM87109505-896-8389CA
Ernie WintergerstCity of LongmontLongmontCO80503303-845-2846BCMA, CTW
Evan Lehman-BakerAlbuquerqueNM87105505-268-5201CA
Fred BerkelhammerBerkelhammer Tree ExpertsLouisvilleCO80027303-443-1233CA
Fred BichaKalispell Parks & RecKalispellMT59901406-208-2480CA, MS
Fred H. HaberechtCSU Facilities ManagementFort CollinsCO80526970-491-0162BCMA
Fred RoybalHilltop Landscape ContractorsAlbuquerqueNM87184505-898-9690CA
George BiedensteinValleycrest LandscapingCentennialCO80015303-699-2830BCMA
Gery WhitemanAlpine Tree Co., Inc.Fort CollinsCO80524970-233-4597CA
Gil MitchellMorgan HillCA95037408-639-1414CA
Glade R. YoungBozemanMT59718406-587-2991CA, CTW
Greg HoweSouth Suburban Parks & RecreationCentennialCO80112303-721-8478CA, MS, TR
Gregory D. HardgroveAsplundh Tree Expert Co.Colorado SpringsCO80905719-660-4520CA
Gregory L. BennettDavey Tree ExpertsBillingsMT59101406-794-5980CA
Gregroy W. SykesBayfieldCO81122970-403-9884CA
Harry A. StatterFirewise LandscapesJacksonWY83002307-732-3986CA
Heidi A. FeigalCity of ThorntonThorntonCO80229303-538-7363CA
Heidi ZeltingerWestminsterCO80020303-457-2478CA
Henry GibbGibb Forest LandscapingLafayetteCO80026303-345-3765CA
Hunter P. HigdonFort CollinsCO80526970-566-6574CA, CTW
Ian MacCallumTrees for Life IncBothellWA98041425-485-4758CA
J. Christopher ArchuletaLakewoodCO80232303-763-4881CA
Jackie Glenn PuchallaAsplundhColorado SpringsCO80905719-359-3038CA, US
Jacqueline Ann ChomiakCity of Aurora Forestry DivisionAuroraCO80012303-739-7177CA
Jaime FloresWright Tree ServiceBrightonCO80603720-732-8928CA
James D. CookAble Tree ServiceMissoulaMT59807406-549-9310CA
James DownieEvergreenCO80439303-419-6852CA, US
James G. HartzellDavey TreeNew PlymouthID83655208-841-8943CA, US
James G. RetzlaffArvadaCO80003906-869-6180CA
James KnottsTree Top Inc.WellingtonCO80549970-568-9695CA, CTW
James M. CookRobertson LandscapingColorado SpringsCO80905719-635-8585CA
James P. MyerAuroraCO80013303-619-4606CA, CTW, TR
James V. GerhartCity of Casper Parks Div.CasperWY82601307-235-8281CA, MS
Jamie KirbyMontana DNRCMissoulaMT59804406-542-4288CA
Jamin MayerParker Tree ServiceLongmontCO80504303-667-8013CA
Janet ThompsonCity of Gillette Parks Dept.GilletteWY82718307-682-0972CA
Jason D. JonesGreenwise ConsultingCarbondaleCO81623970-566-5077BCMA, TR
Jason GrubaDenverCO80218303-241-4825CA
Jason HerbergerCity of HelenaHelenaMT59601406-580-0410CA
Jason KruegelParkerCO80134720-841-6309CA
Jason R. KleinsmithDLC Arbor ServicesDenverCO80237720-326-8605CA
Jason StringerTree AmigosGreat FallsMT59404406-899-1393CA, TR
Jay HeinColorado SpringsCO80919719-367-6525CA
Jeff R. CooperAbove and Beyond ServicesDenverCO80231303-519-1110CA
Jeff RobertsCity of Cherry Hills VillageCherry Hills VillageCO80113303-789-2541CA
Jeffery StimsonSwingle Tree & Lawn Care Co.DenverCO80231303-337-6200CA
Jennifer L. GrimesSwingle Lawn, Tree & Landscape CareLittletonCO80120303-946-6037CA
Jeremy D. LewisAuroraCO80010(303) 638-8623CA, CTW
Jeri MartinovUniversity of New MexicoAlbuquerqueNM87131505-277-1066CA
Jim McGannonJim McGannon, Forestry/Landscape Consultant LLCColorado SpringsCO80949303-526-1118CA
Joe CordovaArbor ForceParkerCO80134303-472-0192CA
Joe GiudiceHelping Hand ContractingLongmontCO80502303-772-7419CA
Joe PhillippsAAA Emergency Tree ServiceDenverCO80204303-623-6851CA
Joel HolzmanJobs by Joel LLCBasaltCO81621970-404-2054CA
Joel SerafinDenverCO80216303-931-8583CA
Joel SzymanskiCity of NorthglennNorthglennCO80234720-490-6959CA
John KaszaCity of WestminsterWestminsterCO80031303-658-2559CA
John L. BretschCentennialCO80015303-669-6408CA
John PentecostThorntonCO80241303-304-7754CA
John RiceConsensus PlanningAlbuquerqueNM87102(505) 385-2116CA
John T Law JrValleyCrest CompaniesOaklandCA94610510-305-1101CA
John W. RobbinsSt. Vrain Arbor CareLongmontCO80501303-772-3136CA, CTW
John WesolowskiCity of Aurora Parks & Open Space Dept.AuroraCO80012303-739-7474CA, MS
Johnny HearlsonAsplundhColorado SpringsCO80905719-246-3306CA, US, MS
Jon BielenA Cut Above Tree Service IncLongmontCO80503303-682-5678CA
Jon CarlsonCity of Colorado SpringsColorado SpringsCO80905719-385-6507CA
Jon Mark StewartCity of Albuquerque Bio ParkAlbuquerqueNM87104505-848-7148CA
Jonathan D. DeesDenver Zoo FoundationDenverCO80205541-680-1853CA
Jonathan RobbGoldenCO80403303-587-6599CA, TR
Jonathan TaftCity of Pueblo Parks and RecPuebloCO81005719-553-2790CA
Jonathan W SterkelTree MonkeysGeringNE69341308-641-3785CA
Joran ViersCity of Albuquerque Parks ManagementAlbuquerqueNM87154505-857-8650CA, MS
Jordan M DurandEvansCO80620970-381-3736CA, CTW
Joseph DuncanSocorroNM87801612-390-2832CA
Joseph McLeanArvadaCO80002303-422-2527CA
Josh HurleyCity of Greeley ForestryGreeleyCO80634970-301-4139CA
Joshua FineFine Tree ServiceFort CollinsCO80524970-377-2851CA
Joshua J. ReedFirewise LandscapesWilsonWY83014307-413-1854CA
Joshua Richard StoychoffMontana DNRCLewistownMT59457406-535-1903CA
Joshua RovderMorrisonCO80465720-767-9250CA
Joshua TheobaldCastle RockCO80104720-369-2963CA
Judy NickellCanaima PressAlbuquerqueNM87110505-256-0769CA
Justin HowardSt. Vrain Arbor CareLongmontCO80501303-532-7742CA
Justin MarquezLos LunasNM87031505-508-8276CTW
Kameren L. LongColorado State Forest ServiceGrand JunctionCO81506970-248-7324CA, TR
Katherine O'BrienSanta FeNM87505505-660-7212CA
Kathleen AlexanderCity of Boulder Foresty DivisionBoulderCO80301303-441-3406CA
Keith A. WoodColorado State Forest ServiceBroomfieldCO80021303-438-9338CA
Keith A. WorleyForestree Development LLCLarkspurCO80118303-681-2492CA
Keith W. KershawLandon's Greenhouse & NurserySheridanWY82801307-672-8340CA
Kelly R NorrisWyoming State Forestry DivisionBuffaloWY82834307-684-2752CA
Ken KawamuraTown of WindsorWindsorCO80550970-674-2440CA
Ken WicklundCity of Longmont ForestryLongmontCO80501303-651-8449CA
Kenneth BelinskiBelinski Tree CareBasaltCO81621970-397-1861CA
Kenneth R. SmithCity of Roswell Parks & RecRoswellNM88201575-624-6720CA, MS
Kenneth RuppMidvaleUT84047801-566-8443CA, US
Kenny GierhartKenny G's Quality TreesPuebloCO81006719-671-7500CA, TR
Kevin C. JonesJones Tree and Lawn, Inc.ArvadaCO80002303-431-8132CA
Kevin DeckertBillingsMT59105406-490-3359CA, US
Kevin J. WalkerFoothills Tree ExpertsFort CollinsCO80524970-482-9488CA
Kevin M. MurphyEvanston Parks & Rec Dist.EvanstonWY82930307-789-2519CA
Kevin Robert PerkinsCastle RockCO80104720-767-4218CA
Kevin S. HubbardMeadCO80542303-359-1813CA
Kevin SalasMaverick TreeCheyenneWY82009307-630-0969CA
Kim BockPrima Plant ServicesCarbondaleCO81623970-963-6113CA, TR
Kim G. RayTerravita Landscape & GardeningBoiseID83714208-345-5495CA
Kirk SchusterWright Tree ServiceBerthoudCO80513970-532-2767CA
Kurt A. KincelAlpine Design & Horticultural ServicesAvonCO81620970-376-2928CA
Kyle AndersonAnderson Tree & Stump RemovalColorado SpringsCO80922719-964-5301CA, TR
Kyle CoverdaleSt. Vrain Arbor CareLongmontCO80504540-661-9658CA, CTW
Kyle NewmyerLittletonCO80120303-408-8051CA
Kyle SylvesterCity of BrightonBrightonCO80601303-655-2089CA
Larissa M MrazYellowstone Valley Tree SurgeonsBillingsMT59108406-636-5810CA
Larry AbernathyDavey Tree Surgery Co.Valley SpringsCA95252925-443-1723CA, US
Larry LarsonCity of Gillette, Parks SuperGilletteWY82718(307) 686-4054CA
Laura PerryScytus, LLCDenverCO80209970-208-5065CA, TR
Laura SmiesEvergreenCO80439312-420-6660CA
Levi ArnioAnacondaMT59711406-498-8766CA, US
Linda R McIntoshMontrose Landscape Consulting & SprayingMontroseCO81403970-249-2659CA
Lisa DiNardoTown of New CastleCarbondaleCO81623970-618-0034CA
Lisa R. OlsonCheyenne Urban ForestryCheyenneWY82001307-637-6428CA
Loretta MannixThe Horticulture ConsultantLovelandCO80537970-407-8695CA
Lori L. BuckFruitaCO81521970-858-7767CA
Louis LinnFort Collins Wholesale NurseryFort CollinsCO80521970-484-1289CA
Luke J. GlinesLuke Glines Tree ExpertsGreeleyCO80631970-454-2141CA, CTW
Luke Lincoln KilloranCity of Lakewood ForestryLakewoodCO80227720-963-5240CA
Luke Patrick DonovanDonovan Lawncare ServicesSpearfishSD57783605-559-1009CA
Lyndsay MillerTown of Castle RockElizabethCO80107303-435-3416CA
Lynn LathropCity of ThorntonDenverCO80229303-255-7875CA
M. Conroy ManningCommonwealth Tree & GardenDenverCO80219303-502-5388CA
Mark 'Oly' EllisonCheyenne Urban ForestryCheyenneWY82001307-637-6428CA
Mark A. PorterAC Tree ServiceMillsWY82644307-234-7353CA
Mark CrowCity of Colorado SpringsFountainCO80817719-233-7339CA, US, MS
Mark D. HagenBudget Yard Enchancement Inc.Colorado SpringsCO80911719-392-8566CA
Mark D. LyonCity of Rock SpringsRock SpringsWY82901307-389-9537CA
Mark E. LindemanSwingle Tree & Lawn Care Co.EnglewoodCO80111303-221-2422CA
Mark L. HughesWyoming State Forestry DivisionCheyenneWY82002307-777-7586CA
Mark McCoyArbor SolutionsCheyenneWY82009307-634-5319CA
Mark MortensenMortensen's Tree ServiceCentennialCO80121-2422303-734-9320CA
Mark StellePrecision Tree WorksVailCO81658970-926-3594CA, TR
Mark TennantTennant Tree & LandscapeSterlingCO80751970-580-8733CA
Mark Vander MeerWildland Conservations ServicesMissoulaMT59802406-541-2565CA
Matt AlbrechtEvergreenCO80439303-250-1770CA, CTW
Matt MoritzCity of WestminsterWestminsterCO80031720-298-7279CA
Matt WendlingLanderWY82520307-714-2268CA
Matthew E. BeseckerMancosCO81328614-496-1869CA
Matthew KennedyGlacier National ParkWhitefishMT59937406-471-8613CA
Matthew L. SchutterHertiage at Todd CreekBroomfieldCO80021303-438-1575CA
Matthew Miller-McLemoreCity of Aurora ForestryDenverCO80231615-715-1343CTW
Matthew SzumilasParkerCO80138720-260-3817CA
Matthew TiptonFort CollinsCO80526970-213-9452CA
Michael C. FinlayRocky Mountain Weed ManagementColorado SpringsCO80906(719) 492-8515CA
Michael D. EarlEagleCO81631970-328-6080TR
Michael DavisonAsplundh Tree Expert Co.Grand JunctionCO81502970-245-8037CA
Michael DawsonNatrona County School DistrictCasperWY82609307-247-3763CA
Michael HaafLone TreeCO80124303-514-8273CA
Michael HillAlpine Hill Pruning Co.Fort CollinsCO80524970-227-4594CA
Michael Lewis PowellAsplundh Tree ExpertColorado SpringsCO80911719-433-3869CA
Michael McNuttCampbell County Parks & Rec.GilletteWY82718307-682-7406CA
Michael SingletaryCity of AuroraAuroraCO80012303-326-8075CA
Michael SultanDavey Resource GroupFarmers BranchTX75234214-605-2660CA, MS
Michael SwansonDenver Parks & RecDenverCO80223303-698-4906CA, TR
Michael WheelerBoreal Property Management IncJacksonWY83001307-730-2508CA
Mikael CataneseSmith Environmental & EngineeringWestminsterCO80234303-551-7976CA
Mike AndersonAuroraCO80017720-683-9712CA, CTW
Mike WillsADAMS 12 5 STAR SCHOOLSThorntonCO80241303-944-0371CA
Mikel T. ThomasThomas Land Management Inc.SnowmassCO81654970-948-3355CA
Monte BalesCity of Cody Parks Dept.CodyWY82414307-527-5275CA
Nancy BiekarckCity of ThorntonJohnstownCO80534303-319-9714CA
Natalie McNeillThe Davey Tree Expert Co.Fort CollinsCO80524970-484-3635CA
Nate TaloccoSwingleDenverCO80231720-987-8742CA
Nathan DodgeGoldenCO80401720-422-2247CA
Nathan MillerIntegrated Lawn & Tree CareColorado SpringsCO80907719-464-6314CA
Nathan SewoltA-1 Natural Arbor CareDaconoCO80514720-394-3857CA
Nick FoxXcel EnergyHendersonCO80640303-628-2706CA, US
Nicole DennisCasperWY82601616-773-9321CA
Patricia OkamotoTaosNM87571575-758-5715CA
Patrick O'MearaHigh Country LandscapeLittletonCO80130303-944-7004CA, CTW
Paul A. SmithAmerican Arbor CareDenverCO80223303-639-8584CA
Paul DikeBrush Creek LandscapingEagleCO81631970-372-7106CA
Paul HarrisonCity of LaramieLaramieWY82073307-721-5260CA
Paul Landon PainterBoulderCO80306303-956-3982CA
Paul PayneSt. Vrain Plant Health CareLongmontCO80501303-722-3136CA
Paul W. BurnsColorado SpringsCO80921719-338-3603CA
Peter Buster OrganskyCutting Edge Tree CareBreckenridgeCO80424970-485-9153CA
Peter EversLittleonCO80123303-524-0325CA
Peter R. HodgesTrees, For Pete's SakePalisadeCO81526970-464-1553CA
Philip A. HelvieColorado Springs UtilitiesColorado SpringsCO80909719-668-5792CA, US, MS
Philip HardgroveAsplundh Tree Expert Co.Colorado SpringsCO80905719-641-1270CA, US
Phillip GilmoreLandon's Greenhouse & NurserySheridanWY82801307-751-8340CA
R. Stef RinggenbergBoulder Tree & Landscape Co.BoulderCO80301303-530-0640CA
Ralph ZentzCity of Fort Collins ForestryFort CollinsCO80521970-221-6302CA
Randall H. MillerPacifiCorpSalt Lake CityUT84116801-220-2271BCMA, US
Randy A. ColemanCity of Grand Junction - Parks & RecGrand JunctionCO81501970-254-3849CA, MS
Randy SalazarCity of Albuquerque Park ManagementAlbuquerqueNM87103505-857-8102CA
Raymond AldereteTumbleweed ResourcesAlbuquerqueNM87105505-877-9503CA
Raymond L. TylerThe Green Plan Inc.BerthoudCO80513303-807-3388CA
Rebecca LamphearColorado SpringsCO80904719-287-5373CA
Rebecca WegnerMtn. High Tree Care & ConsultingColorado SpringsCO80906719-444-8800CA, MS, TR
Rex HiltonAsplundh Tree Expert Co.Colorado SpringsCO80909719-499-8068CA, US
Richard Cahal ThompsonCity of Santa FeSanta FeNM87504505-955-2105CA
Richard G. DodgenTrees, Inc.PavillionWY82523307-253-0639CA, US
Richard LouieGuaranteed Excellence Inc.DenverCO80204720-339-3647CA
Richard Lozano Jr.WestminsterCO80020720-937-5405CA
Richard S. SimondsCSU, Facilities Mgmt.Fort CollinsCO80523-6030970-491-0048CA
Richard ThurauPlan-It Geo, LLCLakewoodCO80226812-679-7563CA
Richard WilsonCity & County of Denver ForestryLakewoodCO80232(303) 810-5100CA, MS, TR
Rick A. BeaneBowman Tree ServiceLittletonCO80125303-478-8195CA
Rick M. HerweheCerres LandcareBreckenridgeCO80424970-418-9546CA, TR
Robert BrudenellThe Natural Way, Inc.EnglewoodCO80110303-347-0988BCMA, TR
Robert DavisCity of DenverJohnstownCO80534303-882-3037CA, TR
Robert DillonRobert Dillon Tree ServiceMissoulaMT59802406-542-5485CA
Robert E. CoatesCoates Tree ServiceSanta FeNM87502505-983-6233CA
Robert HayesFort CollinsCO80525970-946-2081CA, CTW
Robert IsettWheat RidgeCO80033303-681-7239CA
Robert J. MacDonaldCity of Loveland - ParksLovelandCO80537970-962-3441CA, TR
Robert J. Wright Jr.Waterwise LandscapesRio RanchoNM87144505-818-5974CA
Robert K. MeyersWyoming Trees Inc.LaramieWY82070307-742-3529CA
Robert O'DonnellLeaf & Blade Landscape CareLongmontCO80503303-440-0154CA
Robert S. AndersonArborist Arms Tree CompanyLittletonCO80128720-314-1469CA, CTW
Robert WoodCity of Santa FeSanta FeNM87505505-955-4220CA, MS
Roger D. PeytonCanyon Tree FrogColorado SpringsCO80906719-229-1746CA
Rolland KuhrNaturescape DesignsJacksonWY83002-7426307-733-5564CA
Ron D. HammerCentral Wyoming CollegeRivertonWY82501307-855-2253CA
Ronald E. LiljedahlArborist & Horticulture ConsultantLivingstonMT59047406-222-5499CA
Ronald Parron Jr.A Shade Better LLCMontroseCO81401970-209-1567CA
Roy HoldemanCampbell County Parks & Rec.GilletteWY82718307-656-3851CA
Ryan ReedLam Tree Service, Inc.EvergreenCO80439303-674-8733CA
Ryan WakeleyTown of BerthoudBerthoudCO80513970-532-1600CA
Samuel Brent StricklandAll Things Green, LLCMissoulaMT59808406-531-7125CA
Sara DavisCity & County of DenverDenverCO80202303-579-5236CA
Scott A. HunterCity of Laramie Parks and RecLaramieWY82071307-721-5268CA
Scott C. RubensteinFarmingtonNM87402505-326-3895CA
Scott HardenRiverside Arborist LLCLa PlataNM87418505-324-8733CA
Scott K. GrimesColorado Tree ConsultantsDenverCO80232303-720-8170CA, MS, TR
Scott MakoutzGallatin Tree CareBozemanMT59771406-209-1163CA
Scott T. RandlesFlorenceMT59833406-214-4255CA
Sean CookeDLC LandscapeLittletonCO80123303-350-0979CA
Shane VosbergAuroraCO80018303-906-2536CA
Shelly SimmonsCSFSLa JuntaCO81050719-383-5780CA
Shiloh HatcherCity of Greeley Forestry DivGreeleyCO80634970-339-2436CA
Sid WolfThe Big Ash Tree CompanyLittletonCO80127303-579-5268CA
Stacy RobinsonCity of AuroraFirestoneCO80504720-227-3677CA
Stephen McCarthyCSU, Facilities Mgmt.Fort CollinsCO80523970-491-8727CA, MS
Steve CarpenterNatures BestMissoulaMT59808406-544-1654CA
Steve SchoppDavey TreeDenverCO80220303-903-8059CA
Steve TarrantEagleCO81631970-446-7149CA, TR
Steven D. GeistSwingle Tree and Lawn CareAuroraCO80013303-306-3144BCMA, TR
Steven J RileyBillingsMT59102406-579-8604CA, ARLS
Steven TraylorCity of DenverDenverCO80223720-253-7017CA, MS, CTW, TR
Susan SpauldingSpaulding HorticultureLouisvilleCO80027303-673-0662CA
Sylvia McNeillMcNeill's Tree ServiceCorvallisMT59828406-375-5624BCMA
T. Alan BillauLos LunasNM87031505-565-0637CA
Teddy HildebrandtT4 Tree ServicesGrand JunctionCO81501970-640-5284CA
Terry HammGrand JunctionCO81501970-241-4162CA
Terry James MacArthurTown of ErieErieCO80516303-990-3685CA
Terry SchroderDenverCO80231720-641-1118CA
Thaddeus PetzoldPublic Service Co. of NMAlbuquerqueNM87107505-241-3405CA, US
Thomas C. TewsSwingle Tree & Lawn Care Co.AuroraCO80014303-337-6200CA
Thomas GoldtrapJones Landscape Care Co.ArvadaCO80002303-431-8132CA
Thomas L. FlynnFront Range ArboristsColorado SpringsCO80915719-635-7459CA
Thomas M. McCarthyTenmile Tree CareBreckenridgeCO80424970-389-3277CA
Thomas P. MartinDenverCO80227303-877-8490CA
Thomas ProctorTom's Lawn & Tree CareColorado SpringsCO80918719-391-9050CA
Thomas StewartAll Area Tree CareLakewoodCO80226303-341-1273CA
Thomas TorranceKincaid Tree SurgeryFort CollinsCO80522970-484-8733CA
Tim BuchananCity of Fort CollinsFort CollinsCO80521970-223-0697CA
Tim SelkeTeton County/Jackson Parks & RecJacksonWY83001307-732-5793CA
Timothy FrickElizabethCO80107303-646-0340CA
Timothy LotzFort CollinsCO80521720-341-6458CA, CTW
Timothy MannschreckPoudre Valley REAFort CollinsCO80528970-226-1234CA, US
Todd FitzgeraldProfessional Tree CareJacksonWY83001307-690-0039CA, TR
Todd PetersonNeils Lunceford Landscape NurserySilverthorneCO80497970-389-2172CA
Todd SeymanskiCity of Great FallsGreat FallsMT59403406-771-1265CA
Todd ThrasherSol Solutions LLCSteamboat SpringsCO80487970-846-1807CA
Tom DimickMaverick Lawn & TreeCheyenneWY82003307-772-7500CA
Tom JasminRollinsvilleCO80474303-895-4871CA
Tom TurkTom's Tree ServiceArvadaCO80004303-884-7046CA
Tom WellsCity and County of BroomfieldBroomfieldCO80020303-464-5651CA, TR
Tomoyuki MisawaRyokuka Center Inc.Shiojiri, NaganoJapan399-0705080-6938-6343CTW
Tony CoiaRoaring Fork ClubBasaltCO81621970-309-2015CA
Tracy C. NealSanta FeNM87505505-629-8809CA
Travis S HansenFireline Fire Protection ServicesColumbusMT59019406-780-0133CA
Trenton R. DyerDenver Colorado TempleCentennialCO80122303-818-8844CA
Troy LarsenTree Tech, Inc.BillingsMT59104406-656-5695CA
Tyler SchultzArborist ServicesOphirCO81426970-596-7231CA
Tyler WillisWillis Timber Works LLCMonumentCO80132719-258-7120CA
Vince AquinoLafayetteCO80026303-443-5316CA, TR
Vince GalliThe City of BozemanBozemanMT59771406-582-3205CA
Vince UrbinaColorado State Forest ServiceGrand JunctionCO81503970-250-1923CA, TR
Vit KohoutekBoulderCO80301720-365-4666CA, CTW
W. Dudley MarburgerDudley's Tree, Inc.KalispellMT59901406-756-2565CA
Wade DooleyArbor Medic IncBozemanMT59719406-585-0687CA
Walter Wenger IIICastle RockCO80109720-733-2121CA
Wendy M ClementsCity of Gillette ForestryGilletteWY82716307-689-0505CA
Will PittengerColorado Tree Care, Inc.BoulderCO80305303-499-3722CA
William AlexanderNational Park ServiceDenverCO80212303-906-8586CA
William E. Tedder Jr.Environmental Consultants Inc.TulsaOK74115918-935-4483CA, US
William Ford IIIDoc Rickett's Tree ServiceDurangoCO81301970-259-6269CA
William HerifordDavey Tree Surgery Co.LivermoreCA94551800-727-7782 x383CA, US
William L. MattorBellvueCO80512970-493-9409CA, CTW
William M. FarrellGreen West Inc.ArvadaCO80004303-980-0360CA
William P. WestUniversity of New MexicoAlbuquerqueNM87111505-277-0615CA
Zachary N. JuthFirestoneCO80504303-249-1004CA
Zachary SutliffFort CollinsCO80526970-213-3811CA, CTW
Zachary WehrFort CollinsCO80521262-366-9900CA
Patrick BohinCity of Boulder-ForestryBoulderCO80301303-441-4407CA
Eric SpalsburyHeads Up LandscapingAlbuquerqueNM87184505-991-0904CA
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