Evidence-based treatment protocols for the most common plant diseases, pests and nutrient deficiencies — organized by control strategy: fungicide programs, integrated pest management, organic sprays, sanitation and NPK fertilization.
Confirm the diagnosis before you spend on inputs — several diseases on this site, like bacterial wilt and mosaic virus, have no chemical cure at all, and treating them like a fungal problem wastes money and time. Each plan below states clearly what it treats, when to start, and what to expect.
A rotating schedule of protectant contact fungicides for foliar diseases on vegetables, fruit and ornamentals.
Systemic triazoles and strobilurins for curative action against rust and powdery mildew.
Low-toxicity foliar sprays for home gardens and organic-certified farms.
Cultural control that stops soil-borne bacterial and viral pathogens from spreading.
Reduces aphid and whitefly populations that transmit plant viruses.
Balanced macronutrient program based on soil test results.
A layered strategy combining scouting, cultural, biological and chemical tactics.