Colorado Disease Directory

Colorado’s diverse climate and unique ecosystems present a variety of challenges for maintaining healthy trees and shrubs. Earth-Wise Inc.’s Colorado Disease Directory is an essential resource for homeowners, landscapers, and arborists aiming to protect and preserve the health of their green spaces. This comprehensive guide provides detailed information on common tree and shrub diseases found in Colorado, including bacterial blight, cytospora canker, and fire blight, among others. Each entry includes symptoms, disease type, and effective treatment options to help manage and mitigate these issues effectively.

Upward view of yellow aspen trees against blue sky

Bacterial Blight of Lilac

Disease Type: Bacterial Diseases

Cytospora Canker

Disease Type: Fungal Diseases & Cankers

Wilted leaves on branch against vibrant green background

Fire Blight

Disease Type: Bacterial Diseases

Hypoxylon Canker

Disease Type: Fungal Diseases & Cankers

Ink Spot

Disease Type: Fungal Diseases & Cankers

Green leaf with brown spots(Marssonina Disease), natural sunlight.

Marssonina Blight

Disease Type: Fungal Diseases & Cankers

Needlecast

Disease Type: Fungal Diseases & Cankers

Oak Leaf Blister

Disease Type: Fungal Diseases & Cankers

Powdery Mildew

Disease Type: Fungal Diseases & Cankers

Septoria Leaf Spot

Disease Type: Fungal Diseases & Cankers

Thousand Cankers Disease

Disease Type: Fungal Diseases & Cankers