3 Causes of white spots on tomato leaves
White spots on tomato leaves On a regular day, the tomato has shiny green leaves that symbolize a healthy and happy plant. But, as many tomato gardeners know, that is not always the case. Tomato leaves often turn yellow to brown and purple. These are usually the first signs of a health problem and should be corrected immediately to protect your harvest. 1. Powdery mildew Powdery mildew caused by a variety of fungi is a common disease of tomato plants. Avoiding this is not easy as it is often carried by insects such as air currents and aphids. Powdery mildew is most prevalent when the temperature is hot and dry or hot and humid for a long time. The fungus can also leave the winter in plant debris and manure, coming out when conditions are right. It forms a powdery white or gray dust in cracks on the surface of the leaves and stems. It usually starts at the base of the leaves, which can be difficult to catch when starting. Young leaves of plants are more likely to develop fun...