At the highest elevations of San Benito County at Fremont Peak and San Benito Mountain, the average annual precipitation is high enough and the average annual temperature is cool enough to support mixed conifer forest. At San Benito Mountain, the high elevation climate and extreme geology of the New Idria serpentine, supports a unique mixed-conifer forest that includes foothill pine, Coulter pine, Jeffrey pine, and incense cedar. The extreme conditions of the serpentine soils of the New Idria serpentine mass support many rare local endemic plant species including San Benito evening primrose (Camissonia benitensis), rayless layia (Layia discoidea), Guirado's goldenrod (Solidago guiradonis), and San Benito fritillary (Fritillaria viridea).
At the highest elevations of San Benito County at Fremont Peak and San Benito Mountain, the average annual precipitation is high enough and the average annual temperature is cool enough to support mixed conifer forest. At San Benito Mountain, the high elevation climate and extreme geology of the New Idria serpentine supports a unique mixed-conifer forest that includes foothill pine, Coulter pine, Jeffrey pine, and incense cedar. The extreme conditions of the serpentine soils of the New Idria serpentine mass support many rare local endemic plant species including San Benito evening primrose (Camissonia benitensis), rayless layia (Layia discoidea), Guirado's goldenrod (Solidago guiradonis), and San Benito fritillary (Fritillaria viridea).