California is experiencing a rare Super Bloom this spring. An abundance of colourful wildflowers are covering otherwise grey hillsides with blossoms such as poppies, lupines and asters. A Super Bloom happens, on average, every ten years and is a result of a unique set of conditions – a drought, followed by heavy rains, ideal mid-range temperatures and little to no wind. Vast vistas of yellow, orange and purple flowers are common during these occurrences. As with the cascade of autumn leaves found in the forests of the American east, the Super Bloom attracts thousands of gawkers. Hotlines and websites keep the public apprised of the best places in California's foothills and national parks to witness this colour extravaganza.