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]
Vegetables
Basil Downy Mildew Basil Bacterial Leaf Spot
Basil Foliar Nematode Bean Rust
Beet Fungal Leaf Spot Broccoli Bacterial Black Rot
Broccoli Club Root Brussel Sprout Bacterial Black Rot
Butternut Squash Anthracnose Cabbage Bacterial Black Rot
Carrot Alternaria Leaf Spot Cucumber Anthracnose
Cucurbit Anthracnose Cucumber Bacterial Angular Leaf Spot
Cucumber Downy Mildew Cucurbit Powdery Mildew
Eggplant Impatiens Necrotic Spot Virus Eggplant Verticillium Wilt
Garlic Blue Mold Garlic Scape Anthracnose
Garlic White Rot Kale Bacterial Black Rot
Pepper Bacterial Leaf Spot Pepper - Impatiens Necrotic Spot Virus
Pepper Phytophthora Blight Pepper - Tomato Spotted Wilt Virus
Potato Late Blight Tomato Anthracnose
Tomato Impatiens Necrotic Spot Virus Tomato Spotted Wilt Virus
Tomato Gray Leaf Spot Tomato Cercospora Leaf Mold
Tomato Herbicide Injury
Woody Ornamentals
Andromeda Botryosphaeria Canker
Apple Fire Blight Apple Fungal Leaf Spot
Apple Botryosphaeria Canker Apple Rust
Birch Anthracnose Boxwood Black Root Rot
Boxwood Winter Injury Butterfly bush Phytophthora root rot
Cherry Brown Rot Cherry Black Knot
Cherry Fungal Leaf Spot Dogwood Anthracnose
Dogwood (Red-twig) Anthracnose Dogwood Powdery Mildew
Dutch Elm Disease Elm Stegophora Leaf Spot
Enkianthus Anthracnose Filbert Eastern Filbert Blight
Forsythia Phytophthora root rot Hawthorn Anthracnose
Hawthorn Entomosporium Leaf Spot Heather Phytophthora Root Rot
Hickory Downy Leaf Spot Hickory Gnomonia Leaf Spot
Holly Winter Injury Holly Phyllosticta Leaf Spot
Honey Locust Cercospora Leaf Spot Horse Chestnut Leaf Blotch
Hornbeam Botryosphaeria Canker Hornbeam Anthracnose
Hydrangea Cercospora Leaf Spot Hydrangea Powdery Mildew
Leucothoe Phyllosticta Leaf Spot Leucothoe Powdery Mildew
Lilac Bacterial Blight Lilac Powdery Mildew
Lilac Phytophthora Root Rot Lilac Septoria Leaf Spot
Magnolia Powdery Mildew Maple Anthracnose
Maple Tar Spot Maple Botryosphaeria Canker
Maple Phyllosticta Leaf Spot Maple Powdery Mildew
Maple Septoria Leaf Spot Maple Verticillium Wilt
Mountain Laurel Leaf Spot Ninebark Powdery Mildew
Oak Anthracnose Oak Botryosphaeria Canker
Oak Leaf Blister Oak Tubakia Leaf Spot
Oak Powdery Mildew Pear Trellis Rust
Plum Black Knot Rhododendron Fungal Leaf Spot
Privet Alternaria Leaf Spot Privet Cercospora Leaf Spot
Rhododendron Leaf Gall Rhododendron Winter Injury
Rhododendron Phytophthora root rot Rose Black Spot
Rose Brand Canker Rose Downy Mildew
Sycamore Powdery Mildew Winterberry Powdery Mildew
Herbaceous Ornamentals
Anemone Foliar Nematode Anemone Tobacco Rattle Virus
Angelonia Botrytis Blight Aster Rust
Begonia Bacterial Blight Begonia Botrytis Blight
Coleus Downy Mildew Columbine Black Root Rot
Coreopsis Powdery Mildew Colewort Alternaria Leaf Spot
Cyclamen Impatiens Necrotic Spot Virus Dalia Potyvirus
Daisy Bacterial Leaf Spot Dianthus Botrytis Blight
Fern Bacterial Leaf Spot Fern Foliar Nematode
Geranium Pseudomonas Leaf Spot Geranium Edema
Geranium Xanthomonas Blight Grass Rust
Hellebore Phytophthora Root Rot Hellebore Southern Blight
Heuchera Bacterial Leaf Spot Hollyhock Rust
Hosta Anthracnose Hosta Southern Blight
Hosta X Virus Heuchera Botrytis Blight
Impatiens Downy Mildew Iris Tomato Spotted Wilt Virus
Iris Fungal Leaf Spot Lamium Downy Mildew
Lavender Bacterial Leaf Spot Lavender Black Root Rot
Liatris Rhizoctonia Web Blight Lily Botrytis Blight
Viola Edema Zinnia Botrytis Blight
Lawn
Anthracnose Bipolaris Lear Spot
Fruit
Apple Cedar-Apple Rust Apple Black Rot
Apple Fire Blight Apple Marssonina Blotch
Apple Phomopsis Canker Apple Scab
Apple Botryosphaeria Canker Blueberry Botrytis Blight
Blueberry Phomopsis Canker Cherry Brown Rot
Grape Black Rot Grape Downy Mildew
Grape Powdery Mildew Grape Anthracnose
Peach Brown Rot Peach Leaf Curl
Peach Powdery Mildew Pear Fabraea Leaf Spot
Strawberry Anthracnose Strawberry Powdery Mildew
Conifers
Cedar-apple Rust Cedar Botryosphaeria canker
Cedar blue atlas Botryosphaeria canker
Cedar-Quince Rust Cedar Seiridium Canker
Douglas Fir Diplodia Blight Douglas Fir Rhabdocline Needle Cast
Douglas Fir Swiss Needle Cast Douglas Fir Rhizosphaera Needle Cast
Fir Delphinella Shoot Blight Fir Phytophthora root rot
Juniper Cedar-Hawthorn Rust Juniper Cedar-Quince Rust
Juniper Phomopsis Tip Blight Juniper Seiridium Canker
Leyland Cypress Seiridium Canker Pine Dothistroma Needle Blight
Pine Diplodia Blight Pine Wilt
Spruce Needle Rust Spruce Rhizosphaera Needle Cast
Spruce Stigmina Needle Cast Spruce Winter Injury
