Marigold flowers resemble small carnations and are variably colored yellow, orange or reddish brown.  They attract butterflies and are often recommended as companion plants for several vegetables.  The flower is native to Mexico and Central America and is used in Day of the Dead observances. 
Direct sow soon after last frost 1/4 " deep.  Or start 4-6 weeks indoors beforehand and transplant after danger of frost has passed spacing 10-12" apart.