What must a gardener do if they notice tiny flies hovering around the soil surface of their basil plant?

Answer

Immediately reduce watering frequency to let the top layer dry out.

Seeing tiny flies hovering around the soil indicates fungus gnats, which means watering frequency must be reduced to allow the top layer of soil to dry out, addressing the breeding environment for the gnat larvae.

What must a gardener do if they notice tiny flies hovering around the soil surface of their basil plant?
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