Lettuce, Lettuce 'Chartwell', Lactuca sativa var. romana, L-R lettuce chartwell, Yugoslavian red, Analena, all growing in allotment.

Lettuce, Lettuce 'Chartwell', Lactuca sativa var. romana, L-R lettuce chartwell, Yugoslavian red, Analena, all growing in allotment.

Lettuce, Lettuce 'Chartwell', Lactuca sativa var. romana, L-R lettuce chartwell, Yugoslavian red, Analena, all growing in allotment.

Lettuce 'Little gem pearl', Lactuca sativa 'Little gem pearl', Aerial view of lettuces growing outdoor.

Lettuce 'Little gem pearl', Lactuca sativa 'Little gem pearl', Aerial view of lettuces growing outdoor.

Lettuce 'Little gem pearl', Lactuca sativa 'Little gem pearl', Aerial view of lettuces growing outdoor.