Eliza Tibbets (1823–1898), on her ranch in Riverside, California with husband Luther C. Tibbets, is known as growing the first Washington navel orange and founding the citrus industry and cultural landscape of orange groves in California, United States. Eliza Tibbets was a plantswoman, horticulturist, agronomist, pioneer California farmer, spiritualist, abolitionist, universal suffragist, and renowned Riverside citizen.
In 1873, Eliza Tibbets convinced William Saunders, who was a botanist, nurseryman, landscape gardener, horticulturist, and artist, to test a new citrus plant at her ranch in Riverside. Saunders, among many other things, had already designed the Soldier's National Cemetery at Gettysburg and the Lincoln Tomb Monument in Springfield, Illinois. With five other horticulturists he founded The National Grange of the Order of Patrons of Husbandry in 1867. As the nation’s Chief Experimental Horticulturalist, he was responsible for the introduction of many fruits and vegetables to American agriculture.