ATTENTION: Grape Black Rot is currently out of season. Grape Black Rot season runs March 15 - September 15. Previous seasonal data may be available. Mesonet Site - None -AcmeAdaAltusAlvaAntlersApacheArdmoreArnettBeaverBessieBixbyBlackwellBoise CityBreckinridgeBristowBroken BowBuffaloBurbankBurneyvilleButlerByarsCamargoLake Carl BlackwellCentrahomaChandlerCherokeeCheyenneChickashaClaytonCloudyCooksonCopanDurantElk CityEl RenoErickEufaulaEvaFairviewFittstownForakerFreedomFort CobbGoodwellGrandfieldGuthrieHaskellHectorvilleHintonHobartHoldenvilleHollisHookerHugoIdabelInolaJayKentonKetchum RanchKingfisherLahomaLaneMadillMangumMarenaMay RanchMcAlesterMedfordMedicine ParkMiamiMincoMarshallMt HermanNewkirkNewportNowataNormanOiltonOklahoma City EastOkemahOkmulgeePauls ValleyPawneePerkinsPorterPryorPutnamRed RockRinglingSallisawSeilingSeminoleShawneeSkiatookSlapoutSpencerStiglerStillwaterStuartSulphurTahlequahTalalaTalihinaTiptonTishomingoTulsaValliantVinitaWaltersWashingtonWatongaWaurikaWeatherfordWebbers FallsWestvilleWilburtonWisterWoodwardWynonaYukon Product - None -Forecast TableSeason-Long TableSpray Decision AdvisorPast Years Comparison Start Date Fungicide Protection Days - Select -571014 Get Data About This Product Grape Black Rot Advisor is a weather-based management tool that identifies when a sufficient number of infection days have occurred and a fungicide should be considered. Grape Black Rot Advisor - How To Use (pdf)