Apple anthracnose, or Bull's-eye rot, typically affects twigs and small branches. Initial infection by the fungus usually occurs in the fall. Young cankers appear as small reddish-brown areas on the bark which enlarge the following spring. Cankers are elongate, reaching their full size (1-10" long) by midsummer. Small branches are often girdled. The bark usually splits away around the sunken cankered area. Fungal fruiting bodies may appear as pustules in the center of the canker. The dead tissue in the canker sloughs off leaving "fiddle strings" across the canker. The spores mature in late summer/early fall. Anthracnose cankers do not enlarge after the first year, but continue to produce spores for several seasons. The disease is primarily a problem west of the Cascades. The fungus may also cause a bull's-eye rot of stored fruit.