Image Gallery

Herbaceous Ornamental Disease 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.

Rhizoctonia blight pm ajuga with crown rot Souther blight of ajuga with root rot

Ajuga Rhizoctonia Blight Ajuga Southern Blight

Foliar nematode disease of anemone with angular yellow and brown spots on leaves yellow ring spots on anemone leaves infected with tobacco rattle virus

Anemone Foliar Nematode Anemonre Tobacco Rattle Virus

Botrytis blight of angelonia with crown rot and gray mold on stems

Angelonia Botrytis Blight

aster rust showing yellow spots and orange sporulation on leaves Botrytis blight of begonia with brown lesions on an old leaf

Aster Rust Begonia Botrytis Blight

yellow and brown V shaped lesions on a potted begonia leaves

Begonia Bacterial Blight

Impatiens necrotic spot virus on a begonia plant with mottling of leavs powdery mildew of begonia with white mildew on leaves and flowers

Begonia INSV Begonia Powdery Mildew

Botrytis blight of calibrachoa with brown old leaves

Black root rot of calibrachoa with wilting of leaves

Calibrachoa Botrytis Blight Calibrachoa Black Root Rot

mottling and browning of calibrachoa leaves infected with tobacco mosaic virus

Calibrachoa Tobacco Mosaic Virus

bacterial leaf spot of catchfly with brown lesions on the upper leaf surface

Catchfly Bacterial Leaf Spot

dark brown lesions on chrysanthermum transplants Brown fust of chrysanthermum with small yellow spots and brown pustules

Chrysanthermum Bacterial Leaf Spot Chrysanthemum Brown Rust

Impatiens necrotic spot virus on cineraria with mottling and necrosis on leaves Downy mildew of coleus with angular yellow and brown patches on leaves

Cineraria INSV Coleus Downy Mildew

Black root rot of columbine with yellowing of leaves and stunted growth

Tobacco spotted wilt viurs on chrysanthermum with brown lesions on leaves and stems

Columbine Black Root Rot Chrysanthemum TSWV

Powdery mildew of coreopsis with white mildew on the upper leaf surface

Coreopsis Powdery Mildew

inpatiens necrotic spot virus on cyclamen leaves with ring spots poty virus or dehlia leaves with mosaic sympotms

Cyclamen INSV Dalia Potyvirus

bacterial leaf spot of daisy with brown spots on leaves Botrytis blight on dianthus

Daisy Bacterial Leaf Spot Dianthus Botrytis Blight

Bacterial leaf spot of fern with brown necrotic lesions on leaves Foliar nematode disease of fern with brown necrotic lesions on leaves

Fern Bacterial Leaf Spot Fern Foliar Nematode

edema on a gernium leaf with water soaking and brown spots rust disease on ornamental grass stem with brown spots and pustules

Geranium Edema Grass Rust

Phytophthora root rot of hellebore southern blight on a hellebore stem with white and light brown fungal structures called sclerotia

Hellebore Phytophthora Root Rot Hellebore Southern Blight

Bacterial leaf spot on heuchera transplants Botrytis blight of heuchera with large brown spots on a leaf

Heuchera Bacterial Leaf Spot Heuchera Botrytis Blight

two hibiscus leaves with yellow spots on the upper surface a hibiscus leaf with yellow spots and orange fungal sporulation

rust disease of hollyhock with yellow and brown spots on leaves Anthracnose of hosta with small brown spots on leaves

Hollyhock Rust Hosta Anthracnose

southern blight of hosta with crown rot and light brown sclerotia hosta x virus on a hosta plant with mottling of leaves

Hosta Southern Blight Hosta X Virus

impatiens downy mildew with light white mold on the lower surface of a leaf tobacco spotted wilt virus on iris with brown necrosis along the leaves

Impatiens Downy Mildew Iris Tomato Spotted Wilt Virus

fungal leaf spot of iris Downy mildew of lamium with angular brown lesions on leaves

Iris Fungal Leaf Spot Lamium Downy Mildew

Bacterial leaf spot of lavender Balck root rot of lavender

Lavender Bacterial Leaf Spot Lavender Black Root Rot

Phytophthora root rot of lavender Rhizoctonia web blight of liatris

Lavender Phytophthora Root Rot Liatris Rhizoctonia Web Blight

Botrytis blight of lily with brown spots on leaves and flowers impatiens necrostic spot virus and tobacco spotted wilt virus co-infection on lobelia

Lily Botrytis Blight Lobelia - INSV and TSWV

edema on a young shoots of peony

black root rot of phlox

Peony Edema Phlox Black Root Rot

Powdery mildew of phlox with white mildew on leaves Botrytis blight on poinsettia with gray mold on the stems

Phlox Powdery mildew Poinsettia Botrytis Blight

Black root rot of salvia with stunted growth Bacterial leaf spot of salvia

Salvia Black Root Rot Salvia Bacterial Leaf Spot

Botrytis blight of sedum with gray mold on dead leaves and stems

Botrytis blight on tulip leaves and flowers

Sedum Botrytis Blight Tulip Botrytis Blight

edema on a viola leaf Botrytis blight of zinnia with brown spot on leaves and flower buds

Viola Edema Zinnia Botrytis Blight

Bacterial leaf spot of zinnia with water soaking spots on leaves and flowers

Cercospora leaf spot of zinnia

Zinnia Bacterial Leaf Spot Zinnia Cercospora Leaf Spot

Alternaria leaf spot on zinnia leaves

Zinnia Alternaria Leaf Spot

Return to the Top