There's rarely a bad time to visit Yosemite Valley, but one of the better times is when the Pacific Dogwood (Cornus nuttallii) tree is blooming. This usually happens from late April to mid-May, so many summer visitors to the park don't get to see this floral display.
The showiest part of the blossom are actually bracts that attach below the flowers of this tree. The flowers themselves are in the tight cluster in the middle.
Remember, it's not just a picture, it's a story.