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Identifying whiteflies on Cucumber
Tiny white, moth-like insects that fly up in a cloud when the plant is disturbed, with honeydew and sooty mould often visible on leaves below.
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Life cycle
Eggs laid on leaf undersides. Multiple generations per year. Thrive in warm temperatures.
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Damage to Cucumber
Whiteflies sap-suck on leaf undersides, weakening the vine and coating leaves and developing fruit in sticky honeydew that attracts sooty mould.
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How to treat whiteflies on Cucumber
Use yellow sticky traps to catch adults, apply insecticidal soap or neem oil to leaf undersides, and remove heavily infested lower leaves.
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Preventing whiteflies on Cucumber
Inspect leaf undersides regularly, especially in warm weather, and use reflective mulch to deter adults from landing.