A final orange and yellow flowered plant in my garden — flower calyces are yellow while petals are orange — is Dyckia (DICK-ee-uh). This plant is so uncommon that it does not really have a ...

4. Blanket Flower (Gaillardia aristata) The Great Blanket Flower makes a stunning addition to rock gardens or sunny borders with its cheerful golden yellow flowers often tinged with red or orange ...

The flowers are wild mustard, says Pat Brennan, environmental reporter for the Orange County Register. The common name is black mustard and grows wild, but is non-native.