On June 1, 1806, Meriwether Lewis "met with a singular plant today in blume" and collected it "on the steep sides of the fertile hills" northeast of Kamiah, Idaho. Clarkia was named for William Clark, co-captain of the expedition. Also called Ragged Robin, this showy annual with bright satiny pink to lavender flowers was popular in American seed catalogs of the mid-19th century. Recorded and/or collected by Lewis and Clark on their expedition.

Direct sow seeds outdoors in early spring in a prepared seedbed of well-drained soil. Approximately 370 seeds per packet.