On June 14, 1846, a small band of settlers marched on the Mexican garrison at Sonoma and took the commandant, Mariano Vallejo, prisoner, They issued a proclamation which declared California to be a Republic independent of Mexico. This uprising became known as the Bear Flag Revolt after the hastily designed flag depicting a grizzly bear and a five pointed star over a red bar and the words "California Republic." The grizzly bear was a symbol of great strength while the lone star made reference to the lone Star of Texas. The flag only flew until July 9, 1846 when it was learned that Mexico and the United States were already at war. Soon after, the Bear Flag was replaced with the American flag. It was adopted as the State Flag by the State Legislature in 1911. Source: State of California.
The California redwood was designated the official State Tree of California by the State Legislature in 1937. Once common throughout the Northern Hemisphere, redwoods are found only on the Pacific Coast. Many groves and stands of the towering trees are preserved in state and national parks and forests. There are actually two genera of California redwood: the coast redwood (Sequoia sempervirens) and the giant sequoia (Sequoiadendron giganteum). The coast redwoods are the tallest trees in the world; one reaching over 379 feet tall grows in Redwood National and State Parks. One giant sequoia, the General Sherman Tree in Sequoia & Kings Canyon National Park, is over 274 feet high and more than 102 feet in circumference at its base; it is widely considered to be the world's largest tree in overall volume Source: California State Library