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Aphids on Watercress
How to identify and get rid of aphids on Watercress. Size: 1–3mm.
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Identifying aphids on Watercress
Soft-bodied, pear-shaped insects in green, black, yellow, or brown. Often clustered on new growth and undersides of leaves.
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Life cycle
Reproduce rapidly without mating in spring/summer. One female can produce 80+ offspring per week. Multiple generations per year.
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Damage to Watercress
Suck sap from soft tissue, causing distorted growth, sticky honeydew, and sooty mould. Can transmit viruses.
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How to treat aphids on Watercress
Spray with strong water jet to dislodge. Apply insecticidal soap or neem oil. Introduce ladybirds.
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Preventing aphids on Watercress
Encourage natural predators. Avoid excess nitrogen. Inspect new plants.