Hiromitsu Sumi was born in November. 1899 in Yonago, Tottori Prefecture, an area known for fishing, sand dunes and rice fields. He started his U.S. land migration from Philadelphia, PA Port after leaving the S.S. Tuscan Prince on October 3, 1919. Unlike his Tottori family's farm background, he worked as a seaman. From Philadelphia, Hiromitsu worked a while in Chicago, IL. from February, 1920. He arrived in Los Angeles, California in September, 1921 and worked three years as a gardener for Mr. [Phineas] Banning in Wilmington, CA. Hiromitsu then worked two years for the Leslie Salt Company (Alvarado, CA) that paid a higher wage. A marriage was arranged to Haruko Endo, also Tottori-born. She arrived in San Francisco, June, 1924. By 1929, Hiromitsu was farming at Ranch 35, where his brother-in-law was farming in the Lunada Bay area on the western coast of Palos Verdes, CA. Hiromitsu and Haruko raised a family of four daughters and three sons.
In the 1930's, the Sumis grew Pearson-Freestone tomatoes and cucumbers, French & summer squash (coop crops). Their late season tomatoes were picked up by Fullerton's Hunts Company for canning. Lima beans (main dry farmed crop) were planted on the upper slopes and hauled to a Ventura packing house. Prices fluctuated according to the market. Certain years brought in little money to pay for high irrigation water bills, young transplants, equipment and migrant laborers.