Pseudoperonospora cubensis - Wikipedia
Vegetable: Cucurbits, Leaf Spots | Center for Agriculture, Food, and the Environment at UMass Amherst
What are these spots on my cucumber leaves? And what can I do about them? : r/vegetablegardening
Fact sheet - Cucumber downy mildew (143)
Cucumber Blight Diseases: Identification and Control - Garden.eco
7 Reasons Why Your Cucumber Leaves Have Yellow Spots and How to Treat Them
Vegetable: Cucurbits, Leaf Spots | Center for Agriculture, Food, and the Environment at UMass Amherst
What's wrong with my plant? : Garden : University of Minnesota Extension
Cucumber Diseases | Plant diseases, Cucumber plant, Growing cucumbers
Cucumber Leaf Symptoms | Cornell Vegetables
How to Identify and Treat Common Cucumber Diseases - Dengarden
plant health - How bad are these spots on my cucumber leaves? - Gardening & Landscaping Stack Exchange
Brown Spots on Leaves of Cucumber Plant :: Melinda Myers
Vegetable: Cucurbits, Leaf Spots | Center for Agriculture, Food, and the Environment at UMass Amherst
How to Identify and Treat Common Cucumber Diseases - Dengarden
Brown Spots on Cucumber Leaves — Identification & Treatment
Are Your Cucumber Leaves Turning Yellow? 6 Reasons Why
What is causing the brown spots on my cucumber leaves? - Ask Extension
Downy Mildew of Vegetables | University of Maryland Extension
Cucumber Diseases: What You Need to Know - Garden.eco
Pseudomonas Syringae On Cucumbers - Recognizing Bacterial Leaf Spot Symptoms | Gardening Know How
Yellowing Leaves and Brown Spots on Cucumber Plants | Cucumber plant, Yellow leaves on plants, Cucumber leaves turning yellow
Brown spots on cucumber leaves - Ask Extension
