Plant Diseases

Almost every garden is eventually plagued by diseases, such as blight or root rot. We'll help you identify what's hurting your plants and how to treat them.
Channels created by larvae of the Emerald Ash Borer
8 Ash Tree Diseases and Issues to Know About
Leaves of a tomato plant turning purple and black
Why Are My Tomato Leaves Turning Purple?
Gooseberry sawfly larvae feeding on red currant leaf
Sawfly Identification, Prevention, and Control
rose rosette disease
Rose Rosette Disease: Identification and Prevention
apple tree with unhealthy leaves
4 Common Apple Tree Diseases
Black currant disease. Anthracnose on the leaf
How to Identify, Treat, and Prevent Anthracnose
spraying baking soda spray onto a plant
How to Control Powdery Mildew With a Homemade Spray
spraying powdery mildew
How to Stop Powdery Mildew on Leaves
Red tomatoes hanging on diseased vine closeup
Save Your Tomato Plants From These Common Diseases
Septoria on tomato plants
Identifying and Controlling Septoria Leaf Spot
powdery mildew on a plant leaf
How to Use Milk Spray to Control Powdery Mildew
powdery mildew on leaves
How to Prevent Powdery Mildew on Plants
powdery mildew on plant
How to Get Rid of Powdery Mildew on Plants
Bacterial disease of geranium flowers
7 Common Reasons Why Geranium Leaves Turn Yellow
Yellow hibiscus
7 Reasons Why Your Hibiscus Leaves Are Turning Yellow
Black Spot on Rose Leaves
How to Treat and Prevent Black Spot on Roses
brown patch disease on lawn
How to Get Rid of Brown Patch Grass Fungus
Lawn disease
How to Identify 5 Common Lawn Diseases
Red thread grass
How to Identify and Treat Red Thread on Your Lawn
dead patch on lawn
Diagnosing Dead Spots in Your Lawn
Magnolia sieboldii tree with white flowers.
Identifying and Treating Leaf Spot Fungus on Magnolia Trees
Dutch elm disease on a tree trunk
Dutch Elm Disease on American Elm Trees
Orchid leaf with black fungal spots
What Are These Black Spots on My Phalaenopsis Orchid Leaves
ingredients for baking soda spray
Use Baking Soda Spray to Cure Plant Fungal Problems
Basil downy mildew in sunlight
How to Deal With Basil Downy Mildew
Person pulling out weeds in a garden
Soil-Borne Diseases and How to Effectively Treat Them
Cucumbers wilting on the vine.
How to Solve Cucumber Problems With Bacterial Wilt
early blight on tomatoes
Identifying and Controlling Early Blight on Tomato Plants
Clematis plant with wilting leaves (clematis wilt), caused by fungus Phoma clematidina
How to Identify Clematis Wilt
Houseplant leaf sprayed with bottle to get rid of scale insects
How to Get Rid of Scale Insects
Seedlings in a pot affected by damping off
Damping Off Disease of Seedlings
Signs of Plant Nutrient Deficiencies
Identifying and Fixing Plant Nutrient Deficiencies
Verticillium wilt
How to Identify, Treat, and Prevent Verticillium Wilt
A woman pruning flowers in garden
How to Get Rid of Rust Fungus on Plants
Tomato blight
Identifying and Treating Tomato Plant Diseases
closeup of brown spots on leaves
How to Get Rid of Brown Spots on Leaves
Tomato plant infected tomato spotted wilt virus also known as TSWV
How to Identify, Treat and Prevent Tomato Spotted Wilt Virus
Aster yellow plant with yellow and green oval leaves on thick stems
How to Identify, Treat, and Prevent Aster Yellows
Spotting and cracking of apples caused by apple scab
How to Identify, Treat, and Prevent Apple Scab
Phytophthora blight (Phytophthora capsici) infecting green beans
How to Identify and Prevent Stem Rot
Corn smut (Ustilago maydis)
How to Identify, Treat, and Prevent Corn Smut
Curly top symptoms, infected plant in late season
How to Identify, Treat, and Prevent Curly Top
Oak tree infected with oak wilt the year before, with some new growth about 25 feet up the tree​
How to Identify and Prevent Oak Wilt
Crown gall on a tree trunk caused by Agrobacterium tumefaciens
How to Identify, Treat, and Prevent Crown Gall
Patch of dead grass.
Identifying and Controlling Snow Mold in Your Lawn
black knot
How to Identify, Treat, and Prevent Black Knot
orchid plant and neem oil
How to Get Rid of Orchid Scale
Clubroot on rape seed (canola), showing a healthy root in the center
How to Identify, Treat, and Prevent Clubroot
Man gardening
Prevent Plant Diseases With Good Gardening Practices
Dead and diseased wood being pruned from magnolia tree
Pruning Dead, Damaged and Diseased Wood
Fusarium wilt on leaves with green tomatoes hanging
Fusarium Wilt of Tomatoes
Gray Mold (Botrytis) on a Tomato
How to Identify and Treat Gray Mold (Botrytis) on Tomatoes
Sunpatiens 'Compact Pink' flowers surrounded with tooth-edged leaves closeup
9 Types of Impatiens That Resist Downy Mildew
Tomato blight
Diagnosing and Treating Three Common Tomato Fungal Diseases
Geranium in pots against stone wall
Botrytis Causes Grey Mold Flower Blight
Yellow patch of grass
How to Identify Turf Disease
Septoria lycopersici (Septoria Leaf Spot). Ascomycota. Common fungal leaf disease of tomatoes. Tomato leaf showing small brown spots characteristic of the disease and some chlorosis or yellowing. Franklin County. Ohio. USA
Spotty Tomato Leaves
A red and green bradford pear tree
How to Treat Fire Blight on Bradford Pear Trees
Powdery mildew on tree leaf.
Common Tree Fungus Identification and Treatment