Why Is My Aucuba Turning Black?
Why Is My Aucuba Turning Black? Some of the aucuba have leaves that are turning black and wilting. … They are suffering from Phytophthora root rot, a soil disease that commonly affects azalea, rhododendron and aucuba shrubs. The fungus itself is present in most soils. Why has my aucuba gone black? The blackening of the