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Dieback (fungus)

Dieback (fungus)
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May start as shoot dieback or root rot, depending on the fungus species/types and when it entered the plant. This fungal diseases can kill landscape and plants. There are a number of species that cause both diseases, but the two most common are Phytophthora cactorum fungus (dieback) and Phytophthora cinnamomi fungus (root rot).