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Greenhouse Disease Management


April 8, 2021 - Author:


  • “A” Team. Daconil (chlorothalonil)[M05], Decree (fenhexamid)[17], Pageant Intrinsic (pyraclostrobin + boscalid)[11/7], Affirm WDG (polyoxin D zinc salt)[19], Astun (isofetamid)[7], Broadform (fluopyram + trifloxystrobin)[7/11], Orkestra (fluxapyroxad + pyraclostrobin)[7/11], Palladium (cyprodinil + fludioxonil)[9/12], Mural (azoxystrobin + benzovindiflupyr)[11/7], Medallion/Emblem (fludioxonil – do not apply to geraniums)[12]
  • “B” Team. (Not recommended when disease pressure is high). Iprodione Pro 2SE/Chipco 26019/26 GT (iprodione)[2]

Powdery Mildew

  • “A+” Team. Eagle (myclobutanil)[3], Terraguard SC (triflumizole)[3], Tourney (metconazole)[3]
  • “A/A-” Team. Pageant Intrinsic (pyraclostrobin + boscalid)[11/7], Palladium WDG (fludioxonil + cyprodinil)[12/9], Mural (azoxystrobin + benzovindiflupyr)[11/7], Orkestra (fluxapyroxad + pyraclostrobin)[11/7], Broadform (fluopyram + trifloxystrobin) [7/11]
  • “B” Team. Heritage (azoxystrobin)[11], Compass (trifloxystrobin)[11], Insignia (pyraclostrobin)[11]

Downy Mildew

  • “A+” Team. Subdue MAXX (mefenoxam)[4], Adorn (fluopicolide)[43], Segovis (oxathiapiprolin)[49]
  • “A-” Team. Stature SC (dimethomorph)[40], Micora (mandipropamid)[40], Orvego (ametoctradin + dimethomorph)[45/50], Segway (cyazofamid)[21], FenStop (fenamidone)[11]
  • “B” Team. Alude (phosphorous acid products)[33], Heritage 50WG (azoxystrobin)[11], Insignia (pyraclostrobin)[11], Pageant Intrinsic (pyraclostrobin + boscalid)[11/7], Protect DF (mancozeb)[M03], Compass (trifloxystrobin)[11]


  • “A” Team. Subdue MAXX (mefenoxam)[4], Adorn (fluopicolide)[43], Micora (mandipropamid)[40], Segovis (oxathiapiprolin)[49]
  • “B” Team. FenStop (fenamidone)[11], Alude (phosphorous acid products)[33], Captan (captan)[M04], Aliette WDG (fosetyl-al)[33], Segway (cyazofamid)[21], Truban/Terrazole L (etridiazole)[14], Orvego (ametoctradin + dimethomorph)[45/50], Stature SC (dimethomorph)[40]


  • “A” Team. Truban/Terrazole L (etridiazole)[14], Banol (propamocarb)[28], Subdue MAXX (mefenoxam) [4/Watch for pathogen resistance]
  • “B/B-“ Team. Captan (captan)[M04], FenStop SC (fenamidone)[11], Heritage 50WDG (azoxystrobin)[11], Empress Intrinsic Brand Fungicide (pyraclostrobin)[11], Segway (cyazofamid)[21], Alude (phosphorous acid products)[33]


  • “A” Team. Medallion/Emblem (fludioxonil)[12], Terraclor 400 (pentachloronitrobenzene)[14], Affirm WDG (polyoxin D zinc salt)[[19], Pageant Intrinsic (pyraclostrobin + boscalid)[11/7], Tourney (metconazole)[3], Empress Intrinsic Brand Fungicide (pyraclostrobin)[11]
  • “B+” Team. 3336/OHP 6672 (thiophanate-methyl)[1], Captan (captan)[M04], Heritage 50WG (azoxystrobin)[11]


  • Recommendations [Use high labeled rates]: 3336/OHP 6672 (thiophanate-methyl)[1], Terraguard SC (triflumizole)[3], Medallion/Emblem (fludioxonil)[12], Tourney (metconazole)[3]

Bacterial Diseases

  • CuPRO 5000 (copper hydroxide; metallic copper by weight – 40% ) [M01], Nordox 75WG (cuprous oxide; metallic copper by weight – 50.1%) [M01], C-O-C-S (copper oxychloride + copper sulfate; metallic copper by weight – 51.25%) [M01]

*This information is for educational purposes only. Reference to commercial products or trade names does not imply endorsement by MSU Extension or bias against those not mentioned. The pesticide label is the legal document on pesticide use. Read the label, as they change often and follow the instructions closely. Prior to use, determine if the product is registered in your state. The use of a pesticide inconsistent with the label directions can lead to civil or criminal fines and/or condemnation of the crop.


Tags: agriculture, floriculture, greenhouse pest management, integrated pest management, msu extension


Mary Hausbeck

Mary Hausbeck

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