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.
Most cucumber plants contain a bitter compound called cucurbitacin, which can be present in the fruit as well as the foliage. One of the most common reasons why a cucumber is bitter is due to heat stress. If a plant is stressed due to heat, it may start producing bitter cucumbers.