Metallic Peperomia: Perfect Indoor Houseplant

Root rot is a serious fungal disease that affects the root system of plants, causing them to decay and die. It is primarily caused by overwatering, poor drainage, or soil-borne fungi such as Pythium, Phytophthora, Rhizoctonia, and Fusarium. The disease thrives in waterlogged conditions where roots are deprived of oxygen, making them susceptible to fungal infection.

Pythium root rot is a serious fungal disease caused by various Pythium species including P. aphanidermatum, P. ultimum, and P. irregulare. These water molds are present in practically all cultivated soils and attack plant roots under wet conditions, causing rapid wet rot that can extend into the stem. The disease is favored by poor drainage, overwatering, and specific temperatures depending on the species.

Leaf spot is a common fungal disease caused by various pathogens including Alternaria, Ascochyta, Colletotrichum, Septoria, and Venturia. It primarily affects leaves, causing discolored spots that can lead to premature leaf drop if left untreated.

Cercospora is a fungal disease that causes round to oval leaf spots with a light center and a dark border. It thrives on prolonged leaf wetness, dense planting, and warm, stagnant weather. Infestations often begin as small dots on older leaves; the leaves eventually turn yellow and drop off. In gardens, it is commonly seen on beets, Swiss chard, sugar beets, roses, as well as in vegetable patches on tomatoes and eggplants. The infection spreads via rain and irrigation splashes and can survive in infected plant debris.