Labor Day 2016. Labor Day is an annual holiday to celebrate the economic and social contributions of workers to the strength, prosperity, and well-being of the country. In the United States, Labor Day is a federal holiday observed on the first Monday of September.
Quick Answer. Cucumber leaves often turn yellow because they are damaged by the potato leafhopper. The small leafhoppers pull sap from cucumber leaves and inject a toxin into the leaves, causing them to turn yellow or brown and appear burned. Continue Reading.
A cucumber plant with dry, brown leaves may be suffering from a cultural problem or a disease. If the condition does not go away with improved cultural care, try again the following season with a disease-resistant variety. Angular leaf spot is a bacterial disease that causes angular brown spots on leaves.