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.
Why Cucumbers Taste Bitter. Cucumbers contain the natural compound cucurbitacin, which causes bitterness. Bitterness varies by variety of cucumber and by temperatures during the growing season. Uneven watering increases bitterness, as does cool weather. Fertilization, plant spacing, and watering may also affect bitterness, although plant scientists have not found consistent cause and effect.