UCR’s historical account describes the Tibbets planting and its role in the Washington Navel name; UC ANR separately recounts a 1873 dispatch of two plants to Eliza Tibbets. UCR’s March 1874 planting account is a distinct report, so this credit does not establish the exact planting date.
The Citrus Industry dates Washington navel's introduction at Riverside to 1873 and its first fruiting there to 1878. UC ANR separately recounts Saunders sending two plants to Eliza Tibbets in 1873. UCR reports a March 1874 planting account; these sources describe distinct milestones and do not establish one uncontested arrival or planting date.