Under ideal environmental conditions, dogwood anthracnose can be the sole cause of death. destructiva is non-native in North America, flowering dogwood has no natural defense against the pathogen, allowing the fungus to spread unchecked within the tree. Symptoms & Disease Cycle:ĭiscula destructiva was introduced into eastern North America from Asia in the late 1970s and quickly spread throughout the region, decimating natural populations of flowering dogwood in southern New England. sericea) are also resistant to the disease. Other common landscape dogwoods, such as Tatarian dogwood ( C. kousa) is also susceptible to infection but is highly resistant to the disease and typically suffers only minor leaf spotting. Host Plants:ĭogwood anthracnose infects flowering ( Cornus florida) and Pacific dogwoods ( C. The fungus Discula destructiva causes dogwood anthracnose leaf blight and canker.
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