Phytophthora capsici is a water mold that causes serious diseases in various plants, particularly in the Solanaceae family, which includes crops like pepper and tomato. It thrives in warm, moist conditions and can infect plants at any growth stage, leading to symptoms such as wilting, root rot, and fruit decay. This pathogen spreads through soil, water, and infected plant debris, making it challenging to control. Effective management strategies include crop rotation, proper drainage, and the use of resistant plant varieties to minimize its impact on agricultural production.