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.
When tomato plants leaves turn yellow, it could be from a fungus or bacterial problem, like Alternaria alternata or other tomato diseases. If disease is the case, you will want to treat this accordingly. Sometimes yellow leaves on tomato plants mean that there is a pest problem that needs to be handled.