Identify plant diseases quickly with clear symptoms, photos, and solutions to protect your garden from damage.
Bacterial Soft Rot causes soft, mushy, and foul-smelling decay in fleshy plant tissues like roots, tubers, and fruits, resulting in complete destruction of the harvested product and significant post-harvest economic loss.
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Fire Blight, a bacterial disease, causes blighted, blackened, or scorched-looking shoots and flowers (resembling fire damage) and cankers on branches, leading to branch dieback, general plant decline, and significant loss of fruit crops like apples and pears.
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Chemical injury in plants appears as scorching, browning, or distorted growth on leaves and stems, caused by improper pesticide or fertilizer application. This reduces aesthetic value and crop yield.
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Temperature Stress (Heat/Cold) causes wilting, scorched or bleached leaves (heat), or purpling, browning, and stunted growth (cold). The main harm is disrupted metabolism and cell damage, leading to reduced yield, flower drop, or plant death.
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Nutrient Toxicity is characterized by leaf tips and margins appearing burnt or yellow (tip burn), often coupled with bronzing or dark spots, which severely stunts overall growth, potentially leading to wilting and the death of the entire plant if the excessive nutrient concentration is not promptly corrected.
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Root Rot is a destructive disease caused by various soil-borne pathogens (Pythium, Phytophthora, Rhizoctonia) favored by waterlogged soil and poor drainage. Symptoms include wilting, yellowing (chlorosis) of the leaves, and stunting, while the roots appear soft, dark, and mushy. The rot destroys the root system, preventing water and nutrient absorption, leading to irreversible decline and plant death.
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Leaf Spot is a general term for diseases caused by various fungi or bacteria, characterized by circular or irregularly shaped necrotic spots on the foliage, which may have defined borders or a yellow halo. These spots reduce the functional leaf area for photosynthesis, causing premature defoliation in severe cases, thus weakening the plant and decreasing crop yield or aesthetic value.
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Drought Stress is a non-infectious condition caused by insufficient water supply, leading to symptoms like wilting, leaf rolling, marginal scorching, and eventually browning (necrosis) and premature leaf drop. Severe or prolonged stress causes irreversible damage to tissues, reduced photosynthesis and growth, and total plant death, significantly impacting crop yield and landscape plant survival.
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Nutrient Deficiency is a physiological disorder, not a disease, where plants lack essential elements, resulting in distinct symptoms like chlorosis (yellowing), often specific to older or younger leaves (e.g., nitrogen on old leaves, iron on new leaves). Deficiencies also cause stunting, poor fruiting, and marginal leaf necrosis. The primary harm is reduced growth, lower yields, and poor overall plant health due to impaired metabolic functions.
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