GGSPro SolutionsDowny Mildew
Downy Mildew
**This is a very difficult disease to control. Consult Griffin's GGSPro Technical Services Department for cultural practices, treatment intervals and rotation strategies.
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Active Ingredient: Azoxystrobin and Solatenol
Combining two active ingredients, this broad-spectrum, translaminar systemic fungicide is labeled for use on many ornamental and edible crops in greenhouses, shade and lath houses, outdoor nurseries and field grown ornamentals. Labeled for both protective and curative treatments for foliar including Alternaria, Botrytis, Cercospora, Colletotrichum, downy mildew, Entomosporium, powdery mildew, rust and many more. Root diseases include Fusarium, Phytophthora, Rhizoctonia, Sclerotium, and Sclerotinia. Do not use with a organosilicone surfactant.
Foliar spray rates: 1/4-1/2 tsp per gal or 4-7 oz per 100 gal.
Drench rates: 2-3 oz per 100 gal.
*Restricted use in NY
*Not registered in CA, HI
MOA = 7/11
REI = 12
Combining two active ingredients, this broad-spectrum, translaminar systemic fungicide is labeled for use on many ornamental and edible crops in greenhouses, shade and lath houses, outdoor nurseries and field grown ornamentals. Labeled for both protective and curative treatments for foliar including Alternaria, Botrytis, Cercospora, Colletotrichum, downy mildew, Entomosporium, powdery mildew, rust and many more. Root diseases include Fusarium, Phytophthora, Rhizoctonia, Sclerotium, and Sclerotinia. Do not use with a organosilicone surfactant.
Foliar spray rates: 1/4-1/2 tsp per gal or 4-7 oz per 100 gal.
Drench rates: 2-3 oz per 100 gal.
*Restricted use in NY
*Not registered in CA, HI
MOA = 7/11
REI = 12
Active Ingredient: Bacillus subtilis QST 713 strain
Mycofungicide that provides preventative control of certain fungal and bacterial diseases such as Alternaria, Botrytis, downy mildew, powdery mildew and bacterial diseases including Erwinia, Pseudomonas and Xanthomonas. CEASE is labeled for use on ornamentals and several vegetable crops in greenhouses, interiorscapes, fields and nurseries.
Foliar spray rates: range from 1.25-2.5 oz per gal or 1-2 gal per 100 gal.
CEASE can be used as a soil drench to suppress root rots such as Fusarium, Pythium, Phytophthora and Rhizoctonia.
Drench rate: 32-128 oz per 100 gal.
*OMRI listed
MOA = 44
REI = 4
Mycofungicide that provides preventative control of certain fungal and bacterial diseases such as Alternaria, Botrytis, downy mildew, powdery mildew and bacterial diseases including Erwinia, Pseudomonas and Xanthomonas. CEASE is labeled for use on ornamentals and several vegetable crops in greenhouses, interiorscapes, fields and nurseries.
Foliar spray rates: range from 1.25-2.5 oz per gal or 1-2 gal per 100 gal.
CEASE can be used as a soil drench to suppress root rots such as Fusarium, Pythium, Phytophthora and Rhizoctonia.
Drench rate: 32-128 oz per 100 gal.
*OMRI listed
MOA = 44
REI = 4
Active Ingredient: Boscalid and Pyraclostrobin
Broad spectrum fungicide combining two active ingredients for foliar and root diseases on ornamentals in greenhouses, interiorscapes, landscapes and nurseries. Foliar diseases include Alternaria, Botrytis, Cercospora, Colletotrichum, downy mildew, aerial Phytophthora, powdery mildew, rust and scab. Root and crown rots include Cylindrocladium, Fusarium, Pythium, Rhizoctonia, and Sclerotinia. Plant health benefits include increased cold, heat and drought tolerance.
Foliar spray rates: 1/2-1 1/2 tsp per gal or 6-18 oz per 100 gal.
Drench rates: 1-1 1/2 tsp per gal or 12-18 oz per 100 gal.
*Do not use with organo-silicon surfactants such as CapSil.
*Restricted use pesticide in NY
*Not registered in CA
MOA = 7/11
REI = 12
Broad spectrum fungicide combining two active ingredients for foliar and root diseases on ornamentals in greenhouses, interiorscapes, landscapes and nurseries. Foliar diseases include Alternaria, Botrytis, Cercospora, Colletotrichum, downy mildew, aerial Phytophthora, powdery mildew, rust and scab. Root and crown rots include Cylindrocladium, Fusarium, Pythium, Rhizoctonia, and Sclerotinia. Plant health benefits include increased cold, heat and drought tolerance.
Foliar spray rates: 1/2-1 1/2 tsp per gal or 6-18 oz per 100 gal.
Drench rates: 1-1 1/2 tsp per gal or 12-18 oz per 100 gal.
*Do not use with organo-silicon surfactants such as CapSil.
*Restricted use pesticide in NY
*Not registered in CA
MOA = 7/11
REI = 12
Active Ingredient: Bacillus subtilis QST 713 strain
Mycofungicide that provides preventative control of certain fungal and bacterial diseases such as Alternaria, Botrytis, downy mildew, powdery mildew and bacterial diseases including Erwinia, Pseudomonas and Xanthomonas. CEASE is labeled for use on ornamentals and several vegetable crops in greenhouses, interiorscapes, fields and nurseries.
Foliar spray rates: range from 1.25-2.5 oz per gal or 1-2 gal per 100 gal.
CEASE can be used as a soil drench to suppress root rots such as Fusarium, Pythium, Phytophthora and Rhizoctonia.
Drench rate: 32-128 oz per 100 gal.
*OMRI listed
MOA = 44
REI = 4
Mycofungicide that provides preventative control of certain fungal and bacterial diseases such as Alternaria, Botrytis, downy mildew, powdery mildew and bacterial diseases including Erwinia, Pseudomonas and Xanthomonas. CEASE is labeled for use on ornamentals and several vegetable crops in greenhouses, interiorscapes, fields and nurseries.
Foliar spray rates: range from 1.25-2.5 oz per gal or 1-2 gal per 100 gal.
CEASE can be used as a soil drench to suppress root rots such as Fusarium, Pythium, Phytophthora and Rhizoctonia.
Drench rate: 32-128 oz per 100 gal.
*OMRI listed
MOA = 44
REI = 4
Active Ingredient: Azoxystrobin
A broad-spectrum, contact and xylem-mobile systemic strobiluron fungicide, labeled for use as a foliar spray or drench on ornamentals as well as many vegetable and herb transplants in greenhouses, container or field-grown crops and other locations. It controls many diseases including Alternaria, Botrytis, Cercospora, downy mildew, powdery mildew, Rhizoctonia, and scab.
Foliar spray rates: 1 tsp per 2.5-5 gal or 1-4 oz per gal 100 gal.
Drench rate: 0.2-0.9 oz per 100 gal.
Do not use with an organosilicone surfactant. Do not use through low volume equipment.
*Restricted use pesticide in VT
MOA = 11
REI = 4
A broad-spectrum, contact and xylem-mobile systemic strobiluron fungicide, labeled for use as a foliar spray or drench on ornamentals as well as many vegetable and herb transplants in greenhouses, container or field-grown crops and other locations. It controls many diseases including Alternaria, Botrytis, Cercospora, downy mildew, powdery mildew, Rhizoctonia, and scab.
Foliar spray rates: 1 tsp per 2.5-5 gal or 1-4 oz per gal 100 gal.
Drench rate: 0.2-0.9 oz per 100 gal.
Do not use with an organosilicone surfactant. Do not use through low volume equipment.
*Restricted use pesticide in VT
MOA = 11
REI = 4
Active Ingredient: Bacillus amyloliquefaciens strain D747
Biofungicide/bactericide for use on ornamentals, vegetables and herbs, berries, stone fruits and turf for prevention of many foliar and root diseases. Foliar sprays for anthracnose, Alternaria, bacterial leaf spots (Erwinia, Pseudomonas, Xanthomonas), Botrytis, black spot on roses, Cercospora, downy mildew, Entomosporium, Myrothecium, powdery mildew, rust, and scab. Soil drench application prevents Fusarium, Pythium, Phytophthora, and Rhizoctonia. Labeled for cutting and root dip.
Foliar spray rates: 2 tsp-2 Tbls per gal or 16- 96 oz per 100 gal.
Drench rates: 2-4 1/2 tsp per gal or 16-72 oz per 100 gal.
*OMRI listed
MOA = 44
REI = 4
Biofungicide/bactericide for use on ornamentals, vegetables and herbs, berries, stone fruits and turf for prevention of many foliar and root diseases. Foliar sprays for anthracnose, Alternaria, bacterial leaf spots (Erwinia, Pseudomonas, Xanthomonas), Botrytis, black spot on roses, Cercospora, downy mildew, Entomosporium, Myrothecium, powdery mildew, rust, and scab. Soil drench application prevents Fusarium, Pythium, Phytophthora, and Rhizoctonia. Labeled for cutting and root dip.
Foliar spray rates: 2 tsp-2 Tbls per gal or 16- 96 oz per 100 gal.
Drench rates: 2-4 1/2 tsp per gal or 16-72 oz per 100 gal.
*OMRI listed
MOA = 44
REI = 4
Active Ingredient: Oxathiapiprolin
Liquid formulation controls downy mildew and Phytophthora by spray or drench. For use on ornamental plants in greenhouses, shade houses, lathhouses, outdoor nurseries, and commercial landscapes.
Foliar spray rates: 1/8 to 1/2 tsp per 3.5 gal or 0.6 to 2.4 oz per 100 gal.
Drench rates: 1/5 to 1 tsp per 5 gal or 0.65 to 3.2 oz per 100 gal. Longer residual activity at higher rates.
MOA = U15
REI = 4
Liquid formulation controls downy mildew and Phytophthora by spray or drench. For use on ornamental plants in greenhouses, shade houses, lathhouses, outdoor nurseries, and commercial landscapes.
Foliar spray rates: 1/8 to 1/2 tsp per 3.5 gal or 0.6 to 2.4 oz per 100 gal.
Drench rates: 1/5 to 1 tsp per 5 gal or 0.65 to 3.2 oz per 100 gal. Longer residual activity at higher rates.
MOA = U15
REI = 4
Active Ingredient: Mancozeb
Turf and ornamental fungicide. Controls petal blight, leaf spot, Botrytis, anthracnose, rust, and black spot on roses, azaleas, mums and many other ornamentals. Tank mix with copper products for even greater control of bacterial diseases.
Labeled for certain vegetable transplants.
*Do not use on marigolds.
Foliar spray rates: 1 Tbls per gal or 1.5 lb per 100 gal.
*Not registered in AK, CT, OH
Turf and ornamental fungicide. Controls petal blight, leaf spot, Botrytis, anthracnose, rust, and black spot on roses, azaleas, mums and many other ornamentals. Tank mix with copper products for even greater control of bacterial diseases.
Labeled for certain vegetable transplants.
*Do not use on marigolds.
Foliar spray rates: 1 Tbls per gal or 1.5 lb per 100 gal.
*Not registered in AK, CT, OH
Active Ingredient: Mandipropamid
Contact and translaminar systemic fungicide for use in greenhouses, shade structures, lath houses and nurseries. Foliar sprays control downy mildew and aerial Phytophthora. Drench applications control Phytophthora on roots and crowns. Also labeled for use on many vegetable transplants, including control of late blight in tomato and downy mildew in basil.
Foliar spray and drench rates: 1/4-1/2 tsp per gal or 4-8 oz per 100 gal.
Drench volumes per the label.
*Not registered in HI, SD
MOA = 40
REI = 4
Contact and translaminar systemic fungicide for use in greenhouses, shade structures, lath houses and nurseries. Foliar sprays control downy mildew and aerial Phytophthora. Drench applications control Phytophthora on roots and crowns. Also labeled for use on many vegetable transplants, including control of late blight in tomato and downy mildew in basil.
Foliar spray and drench rates: 1/4-1/2 tsp per gal or 4-8 oz per 100 gal.
Drench volumes per the label.
*Not registered in HI, SD
MOA = 40
REI = 4
Active Ingredient: Boscalid and Pyraclostrobin
Broad spectrum fungicide combining two active ingredients for foliar and root diseases on ornamentals in greenhouses, interiorscapes, landscapes and nurseries. Foliar diseases include Alternaria, Botrytis, Cercospora, Colletotrichum, downy mildew, aerial Phytophthora, powdery mildew, rust and scab. Root and crown rots include Cylindrocladium, Fusarium, Pythium, Rhizoctonia, and Sclerotinia. Plant health benefits include increased cold, heat and drought tolerance.
Foliar spray rates: 1/2-1 1/2 tsp per gal or 6-18 oz per 100 gal.
Drench rates: 1-11/2 tsp per gal or 12-18 oz per 100 gal.
*Do not use with organo-silicon surfactants such as CapSil.
*Restricted use pesticide in NY
*Nor registered in CA
MOA = 7/11
REI = 12
Broad spectrum fungicide combining two active ingredients for foliar and root diseases on ornamentals in greenhouses, interiorscapes, landscapes and nurseries. Foliar diseases include Alternaria, Botrytis, Cercospora, Colletotrichum, downy mildew, aerial Phytophthora, powdery mildew, rust and scab. Root and crown rots include Cylindrocladium, Fusarium, Pythium, Rhizoctonia, and Sclerotinia. Plant health benefits include increased cold, heat and drought tolerance.
Foliar spray rates: 1/2-1 1/2 tsp per gal or 6-18 oz per 100 gal.
Drench rates: 1-11/2 tsp per gal or 12-18 oz per 100 gal.
*Do not use with organo-silicon surfactants such as CapSil.
*Restricted use pesticide in NY
*Nor registered in CA
MOA = 7/11
REI = 12
Active Ingredient: Azoxystrobin
A broad-spectrum, contact and xylem-mobile systemic strobiluron fungicide, labeled for use as a foliar spray or drench on ornamentals as well as many vegetable and herb transplants in greenhouses, container or field-grown crops and other locations. It controls many diseases including Alternaria, Botrytis, Cercospora, downy mildew, powdery mildew, Rhizoctonia, and scab.
Foliar spray rates: 1 tsp per 2.5-5 gal or 1-4 oz per gal 100 gal.
Drench rate: 0.2-0.9 oz per 100 gal.
Do not use with an organosilicone surfactant. Do not use through low volume equipment.
*Restricted use pesticide in VT
MOA = 11
REI = 4 Hours
A broad-spectrum, contact and xylem-mobile systemic strobiluron fungicide, labeled for use as a foliar spray or drench on ornamentals as well as many vegetable and herb transplants in greenhouses, container or field-grown crops and other locations. It controls many diseases including Alternaria, Botrytis, Cercospora, downy mildew, powdery mildew, Rhizoctonia, and scab.
Foliar spray rates: 1 tsp per 2.5-5 gal or 1-4 oz per gal 100 gal.
Drench rate: 0.2-0.9 oz per 100 gal.
Do not use with an organosilicone surfactant. Do not use through low volume equipment.
*Restricted use pesticide in VT
MOA = 11
REI = 4 Hours
Active Ingredient: Aluminum Tris (Fosethyl-Al)
Fungicide used as a soil drench and a foliar spray. Controls Pythium, Phytophthora, and downy mildew. Can be used on certain oranmentals in greenhouses, nurseries, and landscapes.
Foliar spray rates: 1 1/4-5 tsp per gal or 1 1/4-5 lb per 100 gal
Drench rates: 6.4-12.8 oz per 00 gal
Do not apply within 14 days of a copper application.
*Not registered in MI, MT, SD, WY
MOA = 33
REI = 12
Fungicide used as a soil drench and a foliar spray. Controls Pythium, Phytophthora, and downy mildew. Can be used on certain oranmentals in greenhouses, nurseries, and landscapes.
Foliar spray rates: 1 1/4-5 tsp per gal or 1 1/4-5 lb per 100 gal
Drench rates: 6.4-12.8 oz per 00 gal
Do not apply within 14 days of a copper application.
*Not registered in MI, MT, SD, WY
MOA = 33
REI = 12
Active Ingredient: Cuprous Oxide
Broad-spectrum copper fungicide/bactericide labeled for use on field grown ornamentals, tree fruits, grapes, small fruits and vegetables. Nursery and greenhouse crops include ornamentals and certain vegetables. Labeled for foliar diseases such as Alternaria, anthracnose, Cercospora, black spot, downy mildew, powdery mildew, and many bacterial leaf spots.
Foliar sprays rates: 1/3 tsp per gal or 10.66 oz per 100.
*OMRI listed
*Not registered in all states
MOA = M1
REI = 12
Broad-spectrum copper fungicide/bactericide labeled for use on field grown ornamentals, tree fruits, grapes, small fruits and vegetables. Nursery and greenhouse crops include ornamentals and certain vegetables. Labeled for foliar diseases such as Alternaria, anthracnose, Cercospora, black spot, downy mildew, powdery mildew, and many bacterial leaf spots.
Foliar sprays rates: 1/3 tsp per gal or 10.66 oz per 100.
*OMRI listed
*Not registered in all states
MOA = M1
REI = 12
Active Ingredient: Ametoctradin and Dimethomorph
Preventative fungicide with contact, translaminar and locally systemic activity, labeled for ornamentals grown in greenhouses, container and field-grown nurseries and interiorscapes. Controls downy mildew (foliar spray) and aerial Phytophthora (spray, sprench or drench). Excellent plant safety.
Foliar spray and drench rates: 3/4-1 tsp per gal or 11-14 oz per 100 gal.
*Restricted use in NY.
MOA = 45/40
REI = 12
Preventative fungicide with contact, translaminar and locally systemic activity, labeled for ornamentals grown in greenhouses, container and field-grown nurseries and interiorscapes. Controls downy mildew (foliar spray) and aerial Phytophthora (spray, sprench or drench). Excellent plant safety.
Foliar spray and drench rates: 3/4-1 tsp per gal or 11-14 oz per 100 gal.
*Restricted use in NY.
MOA = 45/40
REI = 12
Active Ingredient: Dimethomorph
Locally systemic fungicide for the control of downy mildew and Phytophthora diseases on greenhouse and outdoor grown ornamentals. Foliar sprays control downy mildew and aerial Phytophthora. Some damage to blooms may occur from sprays. Drenches control Phytophthora root and crown rots.
Foliar spray rates: 1/3-3/4 tsp per gal or 6.12-12.25 oz per 100 gal.
Drench rates: 1/4-3/4 tsp per gal or 3.06-12.25 oz per 100 gal.
MOA = 40
REI = 12
Locally systemic fungicide for the control of downy mildew and Phytophthora diseases on greenhouse and outdoor grown ornamentals. Foliar sprays control downy mildew and aerial Phytophthora. Some damage to blooms may occur from sprays. Drenches control Phytophthora root and crown rots.
Foliar spray rates: 1/3-3/4 tsp per gal or 6.12-12.25 oz per 100 gal.
Drench rates: 1/4-3/4 tsp per gal or 3.06-12.25 oz per 100 gal.
MOA = 40
REI = 12
Active Ingredient: Mefenoxam
Systemic residual control of root and stem rot diseases caused by Pythium and Phytophthora.
Drench rate: Soil drench at time of seeding at 0.13-0.25 oz per 100 gal; at time of transplanting 1/2-1 oz per 100 gal.
Foliar spray rates: 0.15-0.3 ml per gal or 0.5-1 oz per 100 gal.
Applications for downy mildew must be tank mixed with a product for downy mildew from another MOA class. A 0 hour REI can be obtained for drench applications that meet label criteria.
Many vegetable and herb transplants can be treated. CA and NY require a supplemental label.
Some states have 24C labels allow for use on basil for downy mildew.
MOA = 4
REI = 48
Systemic residual control of root and stem rot diseases caused by Pythium and Phytophthora.
Drench rate: Soil drench at time of seeding at 0.13-0.25 oz per 100 gal; at time of transplanting 1/2-1 oz per 100 gal.
Foliar spray rates: 0.15-0.3 ml per gal or 0.5-1 oz per 100 gal.
Applications for downy mildew must be tank mixed with a product for downy mildew from another MOA class. A 0 hour REI can be obtained for drench applications that meet label criteria.
Many vegetable and herb transplants can be treated. CA and NY require a supplemental label.
Some states have 24C labels allow for use on basil for downy mildew.
MOA = 4
REI = 48
Active Ingredient: Fluopicolide
Foliar spray or drench to control downy mildew (spray only), Pythium and Phytophthora on ornamentals in greenhouses and nurseries.
Foliar spray rates: 1/8-1/4 tsp per gal or 2-4 oz per 100 gal.
Drench rate: 1/8-1/2 tsp per 2 gal or 1-4 oz per 100 gal.
The label requires that another fungicide labeled for the same disease be tank mixed with Adorn for all applications. *Do not apply to poinsettias.* May damage open blooms.
*Restricted use pesticide in NY
MOA = 43
REI = 12
Foliar spray or drench to control downy mildew (spray only), Pythium and Phytophthora on ornamentals in greenhouses and nurseries.
Foliar spray rates: 1/8-1/4 tsp per gal or 2-4 oz per 100 gal.
Drench rate: 1/8-1/2 tsp per 2 gal or 1-4 oz per 100 gal.
The label requires that another fungicide labeled for the same disease be tank mixed with Adorn for all applications. *Do not apply to poinsettias.* May damage open blooms.
*Restricted use pesticide in NY
MOA = 43
REI = 12
Active Ingredient: Trifloxystrobin
Broad spectrum translaminar strobilurin foliar disease control for nursery, greenhouse, and interiorscape use. Compass provides long residual control of many foliar diseases including downy mildew, powdery mildew, Botrytis, rust, black spot and many other leaf spot and blight diseases. *Do not use with an organosilicone surfactant such as Capsil.
Foliar spray rates: 1/5 tsp-2/3 tsp per 2 gal or 1-4 oz per 100 gal.
*Not registered in HI, NY
MOA = 11
REI = 12
Broad spectrum translaminar strobilurin foliar disease control for nursery, greenhouse, and interiorscape use. Compass provides long residual control of many foliar diseases including downy mildew, powdery mildew, Botrytis, rust, black spot and many other leaf spot and blight diseases. *Do not use with an organosilicone surfactant such as Capsil.
Foliar spray rates: 1/5 tsp-2/3 tsp per 2 gal or 1-4 oz per 100 gal.
*Not registered in HI, NY
MOA = 11
REI = 12
Active Ingredient: Aluminum tris
WDG formulation fungicide that can be used as a foliar spray or drench. Controls: Pythium, Phytophthora and downy mildew on ornamentals in greenhouses, nurseries and landscapes.
Rates:
Foliar sprays: 1.25-5 tsp per gal or 1.25-5 lb per 100 gal.
Drench rates: 6.4-12.8 per 100 gal.
*Do not apply within 14 days of a copper application.
MOA = 33
REI = 12
WDG formulation fungicide that can be used as a foliar spray or drench. Controls: Pythium, Phytophthora and downy mildew on ornamentals in greenhouses, nurseries and landscapes.
Rates:
Foliar sprays: 1.25-5 tsp per gal or 1.25-5 lb per 100 gal.
Drench rates: 6.4-12.8 per 100 gal.
*Do not apply within 14 days of a copper application.
MOA = 33
REI = 12