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Full Breakdown

Aphid Outbreak Threatens UK Lettuce Harvest

By Drooid · · How we work

The Outbreak and Immediate Effects

A record infestation of aphids is sweeping lettuce fields across England, jeopardising the final weeks of the domestic growing season. The British Leafy Salads Association (BLSA) estimates that up to 30 million heads of lettuce—about 30 % of the crop expected between now and the end of October—will be rendered unusable. The loss translates to an estimated £10 million hit for growers.

Causes and Geographic Scope

Farmers attribute the surge to unusually warm and dry weather that has created “ideal conditions” for the insects. The infestation has been reported in the Midlands, East Anglia, the south-east, the south and the north-west, affecting a substantial portion of the nation’s lettuce production.

Economic Impact

UK growers typically produce roughly half a billion heads of lettuce each season. The projected waste of 30 million heads therefore represents a significant slice of the annual output. BLSA spokesman Dieter Lloyd described the situation as “serious,” noting that the aphids appear in two peaks—June and again in August/September—coinciding with the critical harvest window.

Official Response

The BLSA has warned retailers and consumers that the shortfall will likely accelerate the arrival of imported lettuce, which may appear on shelves a few weeks earlier than usual. Lloyd emphasized that while the outbreak does not affect the entire national crop, the proportion of loss is large enough to impact market availability and pricing.

Outlook for Supply

With the aphid population expected to persist through the remaining growing weeks, domestic lettuce supplies are set to contract. Imports are poised to fill the gap, potentially altering the seasonal balance between home-grown and foreign produce for the coming autumn months.