Image: Lettuce Disease Symptoms in Close-Up
Published: February 5, 2026 at 5:32:47 PM UTC
High-resolution image of lettuce plants displaying common disease symptoms including downy mildew, bottom rot, bolting, and tip burn, ideal for agricultural diagnostics and education.
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Image description
This high-resolution landscape photograph captures a close-up view of four lettuce plants in a garden bed, each exhibiting distinct symptoms of common physiological and pathological disorders. The soil is dark brown, slightly moist, and textured with organic debris and small clumps, providing a natural backdrop for the diagnostic scene.
From left to right, the first lettuce plant displays signs of downy mildew. Its outer leaves are pale green with irregular yellow patches and a fuzzy, grayish growth on the undersides, indicative of fungal infection. The affected leaves are wilted and curled, while the inner leaves retain a darker green hue and appear relatively healthier. The stem base is thick and white, partially visible above the soil.
The second plant, positioned centrally, shows symptoms of bottom rot. The outer leaves are severely damaged, with dark brown, necrotic tissue concentrated near the base where the leaves meet the soil. These leaves are curled inward and decomposing, exposing a decayed core. The inner leaves are still green but show early signs of curling and stress. The surrounding soil is slightly disturbed, with crumbs and clumps scattered around the plant.
The third lettuce plant is bolting, characterized by a tall, upright central stalk emerging from the rosette. This stalk is covered in tightly packed, ascending light green leaves that become progressively smaller toward the tip. The outer leaves are large, wrinkled, and a mix of light and dark green, with a slightly leathery texture. The bolting stalk is thick and sturdy, indicating the plant's shift from vegetative to reproductive growth.
The fourth plant, located in the bottom right corner, exhibits tip burn. Its leaves are broad and light green, with dark brown, dry, and crispy edges. The damage is most severe on the outer leaves, while the inner leaves remain greener with only minor browning at the tips. The plant is low to the ground, with leaves splayed outward in a radial pattern.
The image is sharply focused, revealing fine details such as leaf texture, disease lesions, and soil granularity. The lighting is natural and even, enhancing the visibility of each symptom without harsh shadows. The composition is educational and diagnostic, ideal for illustrating lettuce pathology in agricultural training, plant health guides, or crop management resources.
The image is related to: A Guide to Growing Lettuce in Your Own Garden