YOSEMITE VALLEY — Yosemite is a wildflower enthusiast’s paradise, where blossoms are found most of the year. The park’s 11,000-foot range in elevation—from 2,000 feet on the west to 13,000 on the east—provides a phenomenal variety of growing conditions. Its location in the central Sierra Nevada makes it a crossroads for plant species that have migrated over the millennia from the Pacific coast, Great Basin, southern deserts, and northern mountains.