Field of Hillside Daisies, Monolopia lanceolata, and blue Devil's Lettuce or Fiddleneck, Amsinckia tessellata, Carrizo Plain National Monument, California, USA.

Close up of Devil's Lettuce or Fiddleneck, Amsinckia tessellata, and purple Fremont's Phacelia, Pacelia fremontii, Carrizo Plain National Monument, California, USA.

Devil's Lettuce or Fiddleneck, Amsinckia tessellata, and purple Fremont's Phacelia, Pacelia fremontii, Carrizo Plain National Monument, California, USA.

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, Lactuca sativa, Mixed varieties growing outdoor in soil.

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.

Lettuce, Lactuca sativa, Close up of mixed varieties.

Lettuce 'Arctic King', Lactuca sativa 'Arctic King', Close up aerial view of green salad vegetable.