GGSPro SolutionsFungal Leaf Spots

Fungal Leaf Spots

*The most common pathogens that cause leaf spots and blights are Alternaria, Botrytis (see Botrytis section), Anthracnose/Colletotrichum, Cercospora, Phyllosticta, Septoria and Rust (see Rust section). Controlling leaf spots can be challenging because symptoms can vary from plant to plant. Signs of a pathogen may not be visible without a hand lens or microscopic examination. It is recommended that you always acquire a lab test from your state diagnostic lab or university to confirm that there is a pathogen associated with the leaf spots or blight. Many abiotic conditions can cause similar spotting. Cultural practices that will help reduce infection include: minimizing leaf wetness and reducing humidity, improving air circulation, and removing diseased leaf debris.
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71-1131
Affirm WDG 11.3% 2.4 LB CLEARY EPA# 68173-3-1001
*Not registered in ND, SD
Vendor: NUFARM FINANCE BV
UM: EA
Active Ingredient: Polyoxin D zinc salt
Broad-spectrum fungicide for use on ornamentals and many edible crops in greenhouses, nurseries, interiorscapes and other labeled sites. Foliar spray control Alternaria, Botrytis, Colletotrichum, powdery mildew and others. Drench treatments control Rhizoctonia and Thielaviopsis. Chemigation instructions have been added to the label.
Foliar spray and drench rates: 1/2-1 tsp per gal or 4-8 oz per 100 gal.
*Not registered in ND, SD
MOA = 19
REI = 4
70-21202
Camelot O 10% 1 GAL SEPRO EPA# 67702-2-67690
*OMRI listed
*Not registered in HI, MT, WY
Vendor: SePRO CORPORATION
UM: EA
Active Ingredient: Copper Octanoate
Copper based fungicide/bactericide. Controls anthracnose, Alternaria, Cylindrocladium, powdery mildew, certain bacterial leaf spots and more. Labeled for use under field conditions, greenhouses, nurseries, interiorscapes and landscapes. Many edible crops on the label.
Foliar spray rates: 0.5-2 oz per gal or 1/2-2 gal per 100 gal.
*OMRI listed
*Not registered in HI, MT, WY
MOA = M1
REI = 4
71-13301
Cease 1.34% 1 GAL BIOWORKS EPA# 264-1155-68539
**OMRI listed
Vendor: BIOWORKS INC
UM: GAL
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
71-1335
Cease 1.34% 2.5 GAL BIOWORKS EPA# 264-1155-68539
**OMRI listed
Vendor: BIOWORKS INC
UM: EA
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
71-1350
Chipco 26019 FLO 23.3% 2.5GAL BAYER EPA# 432-888
*Restricted use pesticide in NY
*Not registered in HI
Vendor: BAYER CROPSCIENCE LP
UM: EA
Active Ingredient: Iprodione
Liquid form of iprodione. Labeled for ornamentals in greenhouses and outdoors as well as turf. Effective against Alternaria, Botrytis, Rhizoctonia and others.
Foliar spray rates: 2-5 tsp per gal or 32-80 oz per 100 gal.
Drench rate for Rhizoctonia: 13 oz per 100 gal.
*Restricted use pesticide in NY
*Not registered in HI
MOA = 2
REI = 12
71-1355
Compass 50% WG 1LB BAYER EPA# 432-1371
*Not registered in HI, NY
Vendor: BAYER CROPSCIENCE LP
UM: EA
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
71-1365
Concert II 2.9% 2.5GAL AGENCY SYNGENTA EPA# 100-1347
*Not registered in HI
Vendor: SYNGENTA CROP PROTECTION INC
UM: EA
Active Ingredient: Propiconzole and Chlorothanonil
Combination of systemic and contact fungicides that provide broad-spectrum control of many important plant diseases on ornamentals and conifers. Foliar sprays control: Ascochyta, Alternaria, Anthracnose, Botrytis, Cercospora, Diplodia, powdery mildew, Septoria, rust and many more. Labeled for use in field and container grown ornamentals in nurseries, lath and shade houses, landscape plantings and specific turf sites. *Do not use in greenhouses.* *Warnings: Do not apply to African violets, begonias, Boston fern, geraniums, pittosporum or schefflera along with Knock Out and Double Delight roses. Damage may occur when used on plants in bud, bloom or with tender new growth. WPS requirements in effect for the next 6 1/2 days. Consult label for details.
Foliar spray rates: 1/2-4 1/8 tsp per gal or 9-69 oz per 100 gal.
*Not registered in HI
MOA = 3/M5
REI = 12
3117025
Restricted Product - Cannot Order - Please Call
Daconil 54% Weather-Stik Fl 2.5GAL AGENCY EPA# 50534-209-100
**Restricted in MA
Vendor: SYNGENTA CROP PROTECTION INC
UM: EA
Active Ingredient: Chlorothalonil
A broad spectrum flowable fungicide for the control of foliar diseases such as Alternaria, anthracnose, Botrytis, Cercospora, powdery mildew, rusts, scabs, Boxwood blight and others. Additional WPS requirements stay in effect for an additional 6 1/2 days.
Foliar spray rates: 1 1/3 tsp per gal or 22 oz per 100 gal.
*Restricted use pesticide in MA
MOA = M5
REI = 12
71-1420
Restricted Product - Cannot Order - Please Call
Daconil 82.5% Ultrex 5LB AGENCY SYNGENTA EPA# 50534-202-100
**Restricted use in MA & RI
Vendor: SYNGENTA CROP PROTECTION INC
UM: BAG
Active Ingredient: Chlorothalonil
A broad spectrum fungicide containing water dispersible granules for easy mixing. Controls leaf spot, Botrytis, rust, black spot, powdery mildew, Boxwood blight and others on ornamental and flowering plants.
Foliar spray rates: 1 Tbls per gal or 1.4 lb per 100 gal. 12 hr REI with additional WPS requirements in effect for the next 61/2 days. Consult label for details.
*Restricted use pesticide in MA & RI
MOA = M5
REI = 12
71-1437
Eagle 20EW 19.7% 1GAL DOW EPA# 62719-463
**This product CANNOT ship via UPS/Fedex. Please request another mode of shipping.

**Restricted use in NY. Cannot be used in Suffolk and Nassau County, NY
Vendor: PROKOZ INC
UM: EA
**This product CANNOT ship via UPS/Fedex. Please request another mode of shipping.

Active Ingredient: Myclobutanil
Foliar fungicide for the control of powdery mildew, rust, scab and other diseases. Can be used on ornamentals outdoors, in greenhouses, and on some non-bearing fruit trees and vine crops. Eagle is locally systemic, with curative and protectant activity.
Foliar spray rates: 1/2-3/4 tsp per gal or 6-12 oz per 100 gal.
*Restricted use pesticide in NY. Cannot be used in Suffolk and Nassau County, NY
MOA = 3
REI = 24
71-1400
Heritage 50% 1LB AGENCY SYNGENTA EPA# 100-1093
*Restricted use in VT
Vendor: SYNGENTA CROP PROTECTION INC
UM: EA
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
71-1405
Heritage 50% 6LB AGENCY SYNGENTA EPA# 100-1093
*Restricted use in VT
Vendor: SYNGENTA CROP PROTECTION INC
UM: EA
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
71-16502
Medallion 50% WDG 8OZ AGENCY SYNGENTA EPA# 100-1434
**Restrictions apply in Nassau and Suffolk County NY
Vendor: SYNGENTA CROP PROTECTION INC
UM: EA
Active Ingredient: Fludioxonil
For control of certain root, crown, stem and foliar diseases, Medallion is a residual contact fungicide labeled for use on ornamentals in greenhouse, nursery, interiorscape, and commercial landscapes. Also labeled as a soil drench for Rhizoctonia, Cylindrocladium, Sclerotium, Thielaviopsis and Fusarium. Foliar diseases controlled include Alternaria, Botrytis, Cercospora, and Myrothecium.
Foliar sprays rates: 1 tsp per 9.5-2.33 gal or 1-4 oz per 100 gal.
Drench rates: 1-2 oz per 100 gal.
*Restrictions apply in Nassau and Suffolk County, NY
MOA = 12
REI = 12
71-1690
Mural 55% WG 1LB AGENCY SYNGENTA EPA# 100-1479
*Restricted use in NY
*Not registered in CA, HI
Vendor: SYNGENTA CROP PROTECTION INC
UM: EA
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
71-2200
Orkestra Intrinsic 42.52% 16OZ AGENCY BASF EPA# 7969-370
**This product CANNOT ship via UPS/Fedex. Please request another mode of shipping.

*Restricted use in NY. Prohibited in Nassau and Suffolk County, NY.
Vendor: BASF CORPORATION
UM: EA
**This product CANNOT ship via UPS/Fedex. Please request another mode of shipping.

Active Ingredient: Fluxapyroxad and Pyraclostrobin
Liquid suspension concentrate. Foliar spray controls Botrytis, downy mildew, powdery mildew and many leaf spot diseases, crown rots, and stem blights. Soil drenches provide preventative control of Fusarium, Rhizoctonia, and Sclerotinia; suppression of Phytophthora, Pythium and Thielaviopsis. For use on ornamental plants in greenhouses, shade houses, lathhouses, outdoor nurseries, retail nurseries and landscapes. May discolor petunia or impatiens blooms and stunt carnations, dianthus, impatiens, and violas.
Foliar spray rates: 1/4-2/3 tsp for most diseases or 4-10 oz per 100 gal.
Drench rate: 1/2-2/3 tsp per gal or 8-10 oz per 100 gal.
*Restricted use in NY. Prohibited in Nassau and Suffolk County, NY.
MOA = 7/11
REI = 12
71-26821
Pageant Intrinsic 38% 12LB AGENCY BASF EPA# 7969-251
*Restricted use in NY
*Not regsitered in CA
Vendor: BASF CORPORATION
UM: EA
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
71-26801
Pageant Intrinsic 38% 1LB AGENCY BASF EPA# 7969-251
**Restricted use in NY
*Not registered in CA
Vendor: BASF CORPORATION
UM: EA
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
71-2685
Palladium WDG 62.5% 2LB AGENCY SYNGENTA EPA# 100-1328
*Restricted use in NY
*Not registered in AK, HI
Vendor: SYNGENTA CROP PROTECTION INC
UM: EA
Active Ingredient: Cyprodinil and Fludioxonil
Broad spectrum foliar spray with contact and translaminar systemic activity controls many foliar and stem diseases, including Botrytis, Alternaria, Cercospora, Myrothecium, aerial Rhizoctonia, Septoria, Boxwood blight and 10 other diseases. Labeled for use on ornamentals in the greenhouse, landscapes, and nurseries.
Foliar spray rates: 1/4-3/4 tsp per gal or 2-6 oz per 100 gal.
*Restricted use in NY
*Not registered in AK, HI
MOA = 9/12
REI = 12
71-2737
Phyton 35 21.27% 1GAL PHYTON CORP EPA# 49538-5
Vendor: PHYTON CORP
UM: EA
Active Ingredient: Copper Sulfate Pentahydrate
Translaminar systemic copper bactericide and fungicide. Preventative and curative activity against major diseases such as Alternaria, Botrytis, powdery mildew, Phytophthora, Erwinia, Pseudomonas and Xanthomonas. Labeled for use on ornamentals and many edible crops in greenhouses and nurseries. Apply as a spray or drench.
Foliar spray rates: 3/4-3 tsp per gal or 13-50 oz per 100 gal.
Drench rates: 13-35 oz per 100 gal.
See label cautions about interactions with B-Nine and phosphonate fungicides.
MOA = M1
REI = 48
71-2732
Phyton 35 21.27% 1LTR PHYTON CORP EPA# 49538-5
Vendor: PHYTON CORP
UM: EA
Active Ingredient: Copper Sulfate Pentahydrate
Translaminar systemic copper bactericide and fungicide. Preventative and curative activity against major diseases such as Alternaria, Botrytis, powdery mildew, Phytophthora, Erwinia, Pseudomonas and Xanthomonas. Labeled for use on ornamentals and many edible crops in greenhouses and nurseries. Apply as a spray or drench.
Foliar spray rates: 3/4-3 tsp per gal or 13-50 oz per 100 gal.
Drench rates: 13-35 oz per 100 gal.
See label cautions about interactions with B-Nine and phosphonate fungicides.
MOA = M1
REI = 48
71-2748
Protect 75% DF T/O 6LB CLEARY EPA# 1001-77
*Not registered in AK, CT, OH
Vendor: NUFARM FINANCE BV
UM: EA
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
71-2755
Restricted Product - Cannot Order - Please Call
Spectro 90% WDG 5LB CLEARY EPA# 1001-72
*Restricted use in MA & NY
*Not registered in AK, SD
Vendor: NUFARM FINANCE BV
UM: BAG
Active Ingredient: Thiophanate-Methyl & Chlorothalonil
Labeled for greenhouses, interiorscapes, nurseries and turf. Controls Alternaria, Botrytis, Cercospora, Rhizoctonia, powdery mildew, rusts, scabs and more.
Foliar spray rates: 1-2 Tbls per gal or 1-2 lb per 100 gal. 12 hr REI with additional WPS requirements for the next 6 1/2 days. Consult label for details.
*Restricted use pesticide in MA & NY
*Not registered in AK, SD
MOA = 1+M5
REI = 12
71-3018
Terraguard SC 42.14% 1QT OHP EPA# 400-521
*Restricted use in NY. Nassau and Suffolk County, NY restrictions apply.
*Not registered in AK
Vendor: OHP
UM: EA
Active Ingredient: Triflumizole
Foliar sprays control Alternaria, Botrytis, Rhizoctonia (aerial), rust and scab. Drench applications control Cylindrocladium, Fusarium and Thielaviopsis. Labeled for use on transplants and vegetables grown to harvest for powdery mildew.
*Do not use on impatiens plugs.
Foliar spray and drench rates: 1/8-1 tsp per gal or 2-16 oz per 100 gal.
*Restricted use pesticide in NY. Nassau and Suffolk County, NY restrictions apply.
*Not registered in AK
MOA = 3
REI = 12
71-3040
Triathlon BA 98.85% 1 GAL OMRI OHP EPA# 70051-107-59807
**OMRI listed
Vendor: OHP
UM: EA
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
71-3050
Trinity 10.5% TR 12/3OZ Case BASF EPA# 499-555
**Not registered in NY
Vendor: BASF CORPORATION
UM: CS
Active Ingredient: Triticonazole
Total release aerosol for greenhouse ornamentals providing broadspectrum prevention and control of diseases including Alternaria, Cylindrocladium, Cercospora, Myrothecium, rust, and Rhizoctonia. Treatments can be repeated at 7-day intervals, up to 3 consecutive applications.
Rate: 1 can per 3000 sq ft except for Cercospora and Fusarium, 2 cans per 3000 sq ft.
*Not registered in NY
MOA = 3
REI = 12

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