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.
By Kathleen Mierzejewski. When you have plants, whether indoor or outdoor, the leaves can suddenly start turning yellow. Yellowing leaves on your plants may point to something being wrong with your plants. Why plant leaves turn yellow is a tricky question.There are plenty of reasons that might cause yellow leaves on your plants.hlorosis â The reason why leaves are turning yellow could be an abnormal condition called chlorosis. Chlorosis is when the yellow leaves are missing the green pigment called chlorophyll. There are specific causes why plant leaves turn yellow due to chlorosis.