Diseases

What's wrong with my plant?

Diagnose the problem.

• Disease management recommendations for trees and shrubs

• Anthracnose
• Apple scab management
• Ascochyta blight of lilacs
• Ash rust
• Bacterial blight of lilac
• Cedar apple rust and other Gymnosporangium rusts
• Cherry leaf spot

• Black knot
• Black rot canker
• Cankers on trees
• Crown gall
• Hypoxylon canker on aspens and willows
• Lichens on trees

• Dutch elm disease-resistant elm cultivars
• History of Dutch elm disease in Minnesota
• Is it oak wilt or oak anthracnose?

• Armillaria root rot

• Dothistroma needle blight
• Nectria canker
• Pine needle rust

• Cedar apple rust and other Gymnosporangium rusts
• Lichens on trees
• Pine-oak and pine-pine gall rusts

• Aster yellows
• Azaleas and rhododendron root rot
• Clematis: stem rot
• Damping-off of seedlings
• Daylilies: diseases
• Geranium rust
• Gray mold of bedding plants
• Hollyhock rust

• Fairy rings
• Leaf spot and melting out in turf
• Leptosphaerulina blight of turf
• Necrotic ring spot of turf
• Powdery mildew in the home lawn

• Aster yellows

• Asparagus rust

• Anthracnose and rust of garden beans

• Early blight of tomatoes and potatoes
• Late blight of potato and tomato

• Early blight of tomatoes and potatoes
• Late blight of potato and tomato
• Nonparasitic disorders of tomatoes

• Apple pest management in Minnesota home orchards
• Apple russeting
• Apple scab management

• Black knot
• Cherry leaf spot

• Black root rot of strawberry
• Leaf spot and leaf scorch of strawberry

• Bacterial leaf diseases of foliage plants
• Oedema

• Slime molds
• Stinkhorns