28+ Camellia Diseases Brown Leaves. Both usually start at the underside of the leaves. Camellia leaves may also develop brown patches as a result of frost damage in spring, or sun scorch during hot summers.
Several diseases affect camellia plants.
Orchid diseases, orchid disease, bacterial soft rot, brown rot, erwinia, bacterial brown spot, acidovorax, pseudomonas, black rot, pythium, phytophthora, fusarium wilt, rhizoctonia, anthracnose, cercospora, thai crud, guignardia, phyllosticta, microfungus, botrytis, sclerotium. Cankers can indicate a disease called camellia dieback. If overhead watering cannot be avoided, at least water during times that will not add on the leaves: Flower blight appears in early spring when moisture is this disease can be confused with several other problems that can damage camellia flower petals.