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.
Hydrangea leaves that turn purple may be trying to tell you that there simply isnât enough phosphorus nearby to keep the plant healthy. Sometimes, in their rush to change their hydrangeaâs flower colors, gardeners may accidentally cause the pH to drop so low that other chemical compounds bind phosphorus.