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.
Vegetable scientists have several explanations about why some cucumbers become more bitter than others. Cucumbers picked from vines growing under some type of stress, such as lack of water, are often somewhat bitter. Misshapen fruits are more likely to be bitter than are the well-shaped fruits.