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

Field of Hillside Daisies, Monolopia lanceolata, and blue Native Mustard, Guillenia lemmonii, Carrizo Plain National Monument, California, USA.

Wildflowers covering hills, Carrizo Plain National Monument, California, USA.

Wildflowers covering hills, Carrizo Plain National Monument, California, USA.

Field of Hillside Daisies, Monolopia lanceolata, and blue Native Mustard, Guillenia lemmonii, Carrizo Plain National Monument, California, USA.

Carizzo plain with mostly purple Fremont's Phacelia, Pacelia fremontii, Carrizo Plain National Monument, California, USA.

Carizzo plain with mostly purple Fremont's Phacelia, Pacelia fremontii, Carrizo Plain National Monument, California, USA.

Field of Hillside Daisies, Monolopia lanceolata, Carrizo Plain National Monument, California, USA.

View of vineyards in front of Castello di Amorosa. Napa Valley, California, USA.

Rows of autumnal coloured grape vines, Vineyards of Napa Valley, California, USA

Old walnut orchard with yellow legume ground cover. Near Colusa, California, USA.

Agave, Royal agave, Agave victoriae-reginae, Detail of green leaves showing pattern.