Poppy-palooza A super bloom of California poppies (Eschscholzia californica) bursting across the foothills near Lake Elsinore in southern California. (more) What Is a Super Bloom? Written by Melissa Petruzzello Melissa Petruzzello (she/her) is Assistant Managing Editor and covers plants, algae, fungi, insects, spiders, renewable energy and environmental engineering. She also handles certain topics in Christianity,... Melissa Petruzzello Fact-checked by Britannica Editors Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree.... Britannica Editors Last updated Mar. 5, 2026 •History A super bloom is a rare phenomenon in desert and semiarid ecosystems in which unusually large numbers of annual wildflowers germinate and bloom at the same time, transforming typically sparse landscapes into sweeping carpets of color. Super bloom events are most famously associated with deserts of the Western Hemisphere, such as California’s Anza-Borrego Desert State Park and Chile’s Atacama Desert, though similar bursts of flowering can occur in drylands nearly worldwide. Visit Respectfully Visitors should...

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