ATTENTION: This tool is currently out of season. An up-to-date graphic will be generated when the tool is in season before April 13. The graph and values from the previous season are still accessible below. Early Middle Late Current One Week Two Week Previous Next Current One Week Two Week Previous Next Current One Week Two Week Previous Next Mesonet Site Data Mesonet Site - Select -AcmeAdaAltusAlvaAntlersApacheArdmoreArnettBeaverBessieBixbyBlackwellBoise CityBreckinridgeBristowBroken BowBuffaloBurbankBurneyvilleButlerByarsCamargoLake Carl BlackwellCentrahomaChandlerCherokeeCheyenneChickashaClaytonCloudyCooksonCopanDurantElk CityEl RenoErickEufaulaEvaFairviewFittstownForakerFreedomFort CobbGoodwellGrandfieldGuthrieHaskellHectorvilleHintonHobartHoldenvilleHollisHookerHugoIdabelInolaJayKentonKetchum RanchKingfisherLahomaLaneMadillMangumMarenaMay RanchMcAlesterMedfordMedicine ParkMiamiMincoMarshallMt HermanNewkirkNewportNowataNormanOiltonOklahoma City EastOkemahOkmulgeePauls ValleyPawneePerkinsPorterPryorPutnamRed RockRinglingSallisawSeilingSeminoleShawneeSkiatookSlapoutSpencerStiglerStillwaterStuartSulphurTahlequahTalalaTalihinaTiptonTishomingoTulsaValliantVinitaWaltersWashingtonWatongaWaurikaWeatherfordWebbers FallsWestvilleWilburtonWisterWoodwardWynonaYukon Season Entity - Select -EarlyMiddleLate First Hollow Stem Category - Select -EarlyMiddleLateAG Golden (Middle)AG Radical (Middle)AM Cartwright (Middle)AP EverRock (MIddle)AP Roadrunner (Early)Baker's Ann (Early)Bentley (Middle)Big Country (Middle)Billings (Early)Bob Dole (Early)Breakthrough (Middle)Butler's Gold (Early)Byrd (Early)Canvas (Middle)Centerfield (Late)CP7017AX (Middle)CP7266AX (Middle)Crescent AX (Middle)Deliver (Late)Doans (Middle)Doublestop CL Plus (Late)Duster (Middle)Endurance (Late)Everest (Early)Fuller (Early)Gallagher (Early)Garrison (Middle)Green Hammer (Middle)Iba (Middle)Jagalene (Middle)Jagger (Early)Joe (W) (Late)Karl 92 (Middle)KS Ahearn (Middle)KS Providence (Middle)KS Western Starr (Middle)Larry (Middle)LCS Atomic AX (Middle)LCS Chrome (Middle)LCS Fusion (Middle)LCS Helix AX (Late)LCS Julep (Late)LCS Mint (Late)LCS Photon AX (Middle)OK Bullet (Middle)OK Corral (Middle)Ruby Lee (Middle)Showdown (Late)Skydance (Early)Smith's Gold (Middle)Strad CL Plus (Middle)SY Achieve CL2 (Early)SY Monument (Late)SY Rugged (Middle)T158 (Middle)TAM 111 (Late)TAM 112 (Early)TAM 113 (Early)TAM 114 (Early)TAM 204 (Early)Tatanka (Middle)Uncharted (Middle)WB-Grainfield (Middle)WB4269 (Early)WB4303 (Early)WB4401 (Early)WB4458 (Early)WB4515 (Early)WB4699 (Late)WB4792 (Middle)Winterhawk (Late)Zenda (Early) Select your first hollow stem category, or begin typing your wheat variety to look up its category. Get Data Yesterday 1733464800000 About This Product First Hollow Stem Advisor is a weather-based tool used to estimate the growth stage of dual-purpose wheat. This determines the date when to remove cattle for optimum returns. First Hollow Stem - How to Use (pdf) Wheat First Hollow Stem - Description OSU Fact Sheet - PSS-2147 - First Hollow Stem