Proctor Valley is a region in the southeast corner of San Diego County, California

San Diego County, California

San Diego County is a large county located in the southwestern corner of the US state of California. Hence, San Diego County is also located in the southwestern corner of the 48 contiguous United States. Its county seat and largest city is San Diego. Its population was about 2,813,835 in the 2000...

, in the United States. Proctor Valley Road runs through the valley and connects Jamul

Jamul, California

Jamul is a census-designated place in San Diego County, California. Jamul had a population of 6,163 at the 2010 census.-Geography:According to the United States Census Bureau Jamul is located at ....

 to Eastlake. This area, which is home to myriad unique forms of plant and animal life, is quickly being consumed by suburban sprawl. It contains populations of the federally threatened plant Deinandra conjugens

Deinandra conjugens

Deinandra conjugens is a rare species of flowering plant in the aster family known by the common names Otay tarplant and Otay tarweed. It is native to a small section of far northern Baja California in Mexico, its range extending north into San Diego County, California, in the United States...

.