Why does your Fragaria x ananassa have tiny black flies? Diagnose the cause and fix it with our step-by-step guide.
The tiny black flies are likely adult fungus gnats, whose larvae thrive in the moist, organic-rich soil preferred by strawberries. They feed on decaying matter and can damage delicate strawberry root hairs if populations become high.
While often attracted to overripe fruit, these flies are drawn to the sugary juices of softening or decaying strawberries. They can lay eggs in the fruit, potentially leading to secondary rot.
Similar to fungus gnats, these flies target high-moisture environments. In strawberry beds, they are often a symptom of overwatering or poorly draining soil which promotes fungal growth.
Your plant might also be experiencing one of these issues:
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