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The Plant Disease Information Office

Image Gallery

This gallery contains images of common plant disease problems which occur in Connecticut. Clicking the link below an image will open a fact sheet which explains the disease and options for management.

[Vegetables] [Woody Ornamentals] [Herbaceous Ornamentals] [Lawn] [Fruit][Conifers]


       Basil Downy Mildew       

                      Basil Downy Mildew                                             Basil Bacterial Leaf Spot

             Cucumber Anthracnose

                          Beet Fungal Leaf Spot                                        Cucumber Anthracnose             


       Cucurbit Powdery Mildew       Pepper Bacterial Leaf Spot

                    Cucurbit Powdery Mildew                                     Pepper Bacterial Leaf Spot

       Pepper Phytophthora Blight      Tomato Anthracnose

                      Pepper Phytophthora Blight                                      Tomato Anthracnose

        Tomato Blossom End Rot      Tomato Early Blight
                         Tomato Blossom End Rot                                       Tomato Early Blight
       Tomato Late Blight     Tomato Leaf Mold
                              Tomato Late Blight                                             Tomato Leaf Mold
      Tomato Powdery Mildew      Tomato Septoria Leaf Spot
                        Tomato Powdery Mildew                                    Tomato Septoria Leaf Spot

     Cucurbit Downy Mildew      Eggplant Verticillium Wilt

                      Cucurbit Downy Mildew                                        Eggplant Verticillium Wilt

     Potato Late Blight

                           Potato Late Blight

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       Amelanchier Rust      Ash Leaf Rust
                              Amelanchier Rust                                                 Ash Leaf Rust
       Azalea Leaf Gall       Beech Anthracnose
                               Azalea Leaf Gall                                               Beech Anthracnose
      Boxwood Blight       Boxwood Macrophoma Leaf Spot
                               Boxwood Blight                                     Boxwood Macrophoma Leaf Spot

      Boxwood Volutella Canker       Cherry Black Knot

                    Boxwood Volutella Canker                                          Cherry Black Knot

     Crabapple Rust       Crabapple Scab

                            Crabapple Rust                                                   Crabapple Scab

    Dogwood Anthracnose       Dogwood Powdery Mildew

                     Dogwood Anthracnose                                      Dogwood Powdery Mildew

   Elm Dutch Elm Disease      Elm Stegophora Leaf Spot

                       Elm Dutch Elm Disease                                    Elm Stegophora Leaf Spot

  Hawthorn Anthracnose      Hawthorn Entomosporium Leaf Spot

                      Hawthorn Anthracnose                                Hawthorn Entomosporium Leaf Spot

  Holly Phyllosticta Leaf Spot      Honey Locust Cercospora Leaf Spot

                 Holly Phyllosticta Leaf Spot                            Honey Locust Cercospora Leaf Spot

   Horse Chestnut Leaf Blotch      Lilac Powdery Mildew

                 Horse Chestnut Leaf Blotch                                      Lilac Powdery Mildew

   Maple Anthracnose      Maple Tar Spot

                          Maple Anthracnose                                           Maple Tar Spot

   Maple Verticillium Wilt      Mountain Laurel Leaf Spot

                    Maple Verticillium Wilt                                    Mountain Laurel Leaf Spot

  Oak Powdery Mildew      Plum Black Knot

                     Oak Powdery Mildew                                           Plum Black Knot

  Rhododendron Fungal Leaf Spot       Rhododendron Leaf Gall

            Rhododendron Fungal Leaf Spot                              Rhododendron Leaf Gall

   Rhododendron Winter Injury      Rose Black Spot

                Rhododendron Winter Injury                                       Rose Black Spot

  Rose Brand Canker      Rose Downy Mildew

                       Rose Brand Canker                                          Rose Downy Mildew

  Rose Powdery Mildew      Rose Rust

                  Rose Powdery Mildew                                                  Rose Rust

  Sycamore Powdery Mildew     Maple Botryosphaeria Canker

              Sycamore Powdery Mildew                              Maple Botryosphaeria Canker

  Birch Anthracnose     Enkianthus Anthracnose

                       Birch Anthracnose                                             Enkianthus Anthracnose

   Spruce Winter Injury      Holly Winter Injury

                     Spruce Winter Injury                                              Holly Winter Injury

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Herbaceous Ornamentals

  Begonia Botrytis Blight      Begonia INSV

                  Begonia Botrytis Blight                                             Begonia INSV
  Begonia Powdery Mildew      Calibrachoa Botrytis Blight
                  Begonia Powdery Mildew                                  Calibrachoa Botrytis Blight
   Cineraria INSV      Coleus Downy Mildew
                         Cineraria INSV                                           Coleus Downy Mildew
               Calibrachoa Thielaviopsis Black Root Rot      Tulip Botrytis Blight
                       Calibrachoa Thielaviopsis                           Tulip Botrytis Blight
                              Black Root Rot                          
  Lily Botrytis Blight     Heuchera Botrytis Blight
                 Lily Botrytis Blight                                                              Heuchera Botrytis Blight
  Zinnia Botrytis Blight     Poinsettia Botrytis Blight
                     Zinnia Botrytis Blight                                                         Poinsettia Botrytis Blight
  Sedum Botrytis Blight
                        Sedum Botrytis Blight
Pythium Blight      Red Thread
                            Pythium Blight                                                       Red Thread

Rhizoctonia Blight      Snow Mold

                         Rhizoctonia Blight                                                     Snow Mold


Apple Cedar-Apple Rust      Apple Fire Blight

                   Apple Cedar-Apple Rust                                           Apple Fire Blight

     Apple Scab      Blueberry Botrytis Blight

                                Apple Scab                                             Blueberry Botrytis Blight

     Grape Black Rot      Grape Downy Mildew

                            Grape Black Rot                                                Grape Downy Mildew    

    Grape Powdery Mildew      Grape Anthracnose

                    Grape Powdery Mildew                                              Grape Anthracnose

    Peach Brown Rot      Peach Leaf Curl

                          Peach Brown Rot                                               Peach Leaf Curl

    Peach Powdery Mildew      Pear Fabraea Leaf Spot

                   Peach Powdery Mildew                                         Pear Fabraea Leaf Spot

   Pear Scab      Plum Black Knot

                                 Pear Scab                                                    Plum Black Knot

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   Douglas Fir Diplodia Blight      Douglas Fir Rhabdocline Needle Cast

                  Douglas Fir Diplodia Blight                           Douglas Fir Rhabdocline Needle Cast

  Douglas Fir Swiss Needle Cast      Douglas Fir Rhizosphaera Needle Cast

               Douglas Fir Swiss Needle Cast                         Douglas Fir Rhizosphaera Needle Cast

  Juniper Cedar-Hawthorn Rust      Juniper Cedar-Quince Rust

               Juniper Cedar-Hawthorn Rust                                 Juniper Cedar-Quince Rust

  Leyland Cypress Seiridium Canker      Scots Pine Diplodia Blight

          Leyland Cypress Seiridium Canker                          Scots Pine Diplodia Blight

  Spruce Needle Rust      Spruce Rhizosphaera Needle Cast

                     Spruce Needle Rust                                 Spruce Rhizosphaera Needle Cast

  Spruce Stigmina Needle Cast     White Pine Dooks Needle Blight

              Spruce Stigmina Needle Cast                           White Pine Dooks Needle Blight


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Check back for updates and new information.

Thank you.