Riverside in Riverside County, California — The American West (Pacific Coastal)

The Oroblanco Grapefruit Tree

Photographed by Adam Margolis, June 8, 2022

1. The Oroblanco Grapefruit Tree Marker

Inscription. Developed at U.C.R. and patented in 1980, is one of a series of citrus varieties to emerge from research in the University of California system. It is planted on this 14th day of February, 1982, as a tribute to the Citrus Experiment Station in Riverside on the occasion of its 75th anniversary of advancing agriculture in California and throught the world. U.S. Lant patent No. 4845

Topics. This historical marker is listed in this topic list: Horticulture & Forestry. A significant historical year for this entry is 1980.

Location. 33° 58.198′ N, 117° 19.591′ W. Marker is in Riverside, California, in Riverside County. It is on Citrus Drive, on the right when traveling north. Touch for map. Marker is in this post office area: Riverside CA 92507, United States of America. Touch for directions.

Regionally, this marker is in Greater Los Angeles,

in the Inland Empire,

and in the Peninsular Ranges.

It is also in the American Southwest.

Globally, it is in North America,

on the Ring of Fire,

in the Pacific Rim,

in the Western Hemisphere,

in the Western World,

and in the Anglosphere.

Historically, it finds itself in what

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was once New Spain

and also Mexico’s Alta California.

Other nearby markers. At least 8 other markers are within walking distance of this marker: Citrus Experiment Station (a few steps from this marker); University Theater (approx. 0.2 miles away); Webber Memorial Cycad Collection (approx. 0.2 miles away); Philip Brett (approx. half a mile away); Mary D. Nichols (approx. 0.8 miles away); William A. Childs House (approx. one mile away); Farm House Motel (approx. one mile away); Isidore and Marie Claire Camou (approx. one mile away). Touch for a list and map of all markers in Riverside.

Photographed by Adam Margolis, July 14, 2022

2. The Oroblanco Grapefruit Tree Marker

Oroblanco Grapefruit Tree and Marker image. Click for full size.

Photographed by Adam Margolis, June 8, 2022

3. Oroblanco Grapefruit Tree and Marker

Photographed by Adam Margolis, June 8, 2022

4. Oroblanco Grapefruit Tree and Marker

Credits. This page was last revised on July 2, 2026. It was originally submitted on June 9, 2022, by Adam Margolis of Mission Viejo, California. This page has been viewed 489 times since then and 16 times this year. Photos: 1. submitted on June 9, 2022, by Adam Margolis of Mission Viejo, California. 2. submitted on July 15, 2022, by Adam Margolis of Mission Viejo, California. 3, 4. submitted on June 9, 2022, by Adam Margolis of Mission Viejo, California. • Syd Whittle was the editor who published this page.