Our cost of living indices are based on a US average of 100. An amount below 100 means Ontario, Oregon is cheaper than the US average.A cost of living index above 100 means Ontario, Oregon is more expensive. Overall, Ontario, Oregon cost of living is 95.40.OST OF LIVING OVERVIEW. Our cost of living indices are based on a US average of 100. An amount below 100 means Ontario, Oregon is cheaper than the US average. A cost of living index above 100 means Ontario, Oregon is more expensive.
Diseases That Cause Black Spots. There are two primary fungus diseases that can produce black spots on tomato plant leaves: Septoria leaf spot and Alternaria leaf spot, also known as early blight. Septoria and Alternaria differ slightly in appearance and prefer slightly different weather climates.
The tomato spotted wilt virus (TSWV) causes dark brown, purple or black spots on leaves. The spots can spread to the stems, causing cankers and streaks. The foliage begins to wilt once the disease spreads, and the leaves become stiff.