What is the colored, fuzzy growth appearing along the bottoms of the exterior stucco walls near my flowerbeds? What can I do about it?
This sounds like colonies of mildew. These microscopic organisms are part of the natural life cycle of organic matter, including decay and composting of landscaping plants and mulches. Excessive moisture in flowerbeds, shrubs, mulch and other organic materials creates ideal growing conditions for these organisms. Prevent, or minimize, it by eliminating the excess moisture: be sure irrigation systems are not directed against walls and keep plants trimmed back to allow ample light and air circulation. Remove these discolorations from stucco surfaces with household bleach followed by a thorough flush with clear water. REMEMBER: always keep bleaches and other chemicals away from children, and ALWAYS use the proper safety equipment — including eye protection – when working with any hazardous substance!
