Red Thread
A fungus condition found in cool, moist regions and is common in western Washington. Red thread develops most rapidly during periods of high moisture and cool temperatures. The effects of the disease are noticeable during the spring and fall, but especially during the winter. Symptoms begin as water soaked, darkened, irregular areas from 2 -24 inches in diameter. The disease becomes more obvious as these areas gradually become bleached or tan colored. When the disease is well developed, light pink to red fungus grow from the tips of the leaves.  Control  Red thread is most easily reduced by maintaining  adequate nitrogen fertility levels. (see fertilizing)