Andean Blueberry: Edible Plant

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.

Pestalotiopsis is a group of fungi (now often placed in Neopestalotiopsis and related genera) that causes leaf spots and tip blight, especially on plants that are stressed or kept too wet. It shows up most after cool, rainy weather or in crowded plantings with poor airflow. Look for tan to dark-brown spots that may have a yellow edge, or shoot tips that brown and die back from the tip inward. Tiny black pinhead-like dots often appear in the dead tissue—these are the fungus’s spore-producing bodies. It commonly affects arborvitae, juniper, cypress, yew, boxwood, many palms (including indoor palms), and can also occur on strawberry leaves and fruit.

Cladosporium is a group of fungi that cause leaf spots and a soft, olive-green to dark brown, velvety growth on leaves and sometimes stems. It thrives in high humidity, poor air movement, and crowded plants. Typical signs are pale or yellow patches on the upper side of the leaf and darker, fuzzy growth on the underside, followed by leaf drop. It is common on tomatoes (especially in greenhouses and high tunnels), peppers, cucumbers, many ornamentals (including roses), and houseplants kept in low light with damp foliage. The fungus spreads by tiny spores moved by air, splashing water, tools, and hands.

Alternaria leaf spot is a common fungal disease caused by Alternaria solani and Alternaria alternata that affects a wide range of plants including tomatoes, potatoes, brassicas, and ornamentals. The disease thrives in warm, humid conditions and can cause significant crop damage if left untreated. Spores overwinter on plant debris and can attach to seeds, making complete elimination difficult.