Drought and Heat Lead to Lettuce Shortages

Paris – 04.08.2026: Persistent heat and drought have significantly affected lettuce production in France. Growers of head lettuce, Batavia and other leafy vegetables are already reporting losses of around 25 percent. As a result, supply is limited in some supermarkets and farmers’ markets. Crops that wilt quickly, burn or stop growing under high temperatures are particularly affected.

According to the available climate data, July 2026 was the hottest and at the same time one of the driest Julys since nationwide measurements began in 1900. France had already experienced an exceptionally early, long and intense heatwave in June. A second significant heatwave followed from 4 to 19 July, further increasing plants’ water requirements and additionally drying out the soils.

Leafy vegetables react particularly sensitively to these conditions. Lettuce is harvested at short intervals and requires sufficient water and moderate temperatures for even growth. In extreme heat, quality can decline within just a few days: leaves lose firmness, show sun damage or become unsuitable for sale. The losses therefore directly affect the quantities available for daily trade.

The shortages do not mean that lettuce is completely unavailable nationwide. However, they can become clearly noticeable depending on the growing region, supply route and variety. Retail companies must compensate for smaller delivery volumes, while local markets depend directly on the harvests of their regional farms. For consumers, this may mean less choice of fresh lettuce and temporarily changing availability.

The situation in agriculture was already tense before July. The national hydrological report had recorded a significant rainfall deficit for June; many groundwater monitoring stations were below the seasonal norm. Water restrictions were in force in numerous departements at the beginning of July. For vegetable-growing farms, this makes irrigation more difficult precisely when crops need particularly large amounts of water because of the heat.

The Ministry of Agriculture had already announced aid and precautionary measures for farms affected by the heat at the end of June and the beginning of July. These included closer monitoring of the water situation, technical advice from regional agricultural services and discussions with insurers on faster settlement of crop damage claims. The announced measures are aimed at the entire agricultural sector and are not limited to lettuce cultivation.

The national agricultural climate network INRAE also points to the effects of heat on vegetable growing, including sunburn, premature ageing of plants and growth stoppage. The current losses of lettuce make this pressure visible in the food trade. How much supply continues to change will now depend on the harvests of the next plantings and on rainfall in the growing regions.