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Powdery white film on leaves.
Fungal pathogen (Phytophthora spp) attacks the conducting tissues of the plant, causing it to wilt and finally collapse.
Orange pustules on leaves or stems.
Large ragged holes, chew marks on leaf edges and silvery trails on leaves or ground .
Yellow mottling or bronzing of the leaves similar to lace bug damage. Significant distortion of flower and leaf buds.