Phomopsis obscurans (leaf blight) is a common disease-causing fungus affecting strawberry plants. Although the fungus infects leaves early in the growing season, leaf blight symptoms are most apparent on older leaves near or after harvest. The disease can weaken strawberry plants through the destruction of older foliage. Weakened plants can result in reduced yields the following year. In years highly favorable for disease development, leaf blight can cause defoliation and, in some cases, death of plants.