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

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

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

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

Mustard, Wild mustard, Sinapis arvensis, Yellow coloured flowers growing outdoor.

Mustard, Wild mustard, Sinapis arvensis, Yellow coloured flowers growing outdoor.

White mustard, Sinapis alba, Often grown as green manure, Side view of two stems with yellow flowers and buds with others behind.

Bronze fennel, Foeniculum vulgare 'Purpureum', mustard yellow flowers on tall blue green stalks, combined planting with Brazilian verbena, Verbena bonariensis.

Bronze fennel, Foeniculum vulgare 'Purpureum', mustard yellow flowers on tall blue green stalks, combined planting with Brazilian verbena, Verbena bonariensis.

Bronze fennel, Foeniculum vulgare 'Purpureum', mustard yellow flower in soft focus and a red ladybird on the fine leaf.

Mustard, Yellow mustard, Sinapis alba.

Mustard, Yellow mustard, Sinapis alba.