A rare, dramatic mass flowering event in which desert or semi-arid landscapes, especially in California and other parts of the American Southwest, erupt in carpets of wildflowers far more extensive and vivid than a typical spring bloom. Superblooms occur when an unusually wet winter follows a period of drought, allowing dormant wildflower seeds that had accumulated in the soil over several dry years to germinate all at once.
Facts
Partially Attested
First DescribedThe term "superbloom" may have developed as a popular label in the 1990s. 1 Source itself hedges with the word may have, so the 1990s origin of the term is not established as certain fact. Identification
Distinguishing AppearanceDesert or semi-arid landscapes become blanketed with dense wildflowers such as yellow brittlebush, bright orange California poppies, and deep purple desert bluebells, far more extensive than a typical bloom. 1 PeriodicityIn California, superblooms typically occur about once every ten years. 1 ScaleThe 2023 California superbloom was large enough to be seen from space by NASA's Landsat 9 satellite. 1 Connections
Associated With
A desert superbloom typically follows the end of an extended drought, when unusually heavy rains after dry years trigger mass germination of a dormant wildflower seed bank.
Demonstrated By
Source Encyclopaedia Britannica
Sources
1. Superbloom - Wikipedia
Necessary conditions and sequence of events section, sentence on bloom frequency
In California, superblooms typically occur once every ten years or so.
Tourism effects section
was large enough to be seen from space by NASA's Landsat 9 satellite and has attracted many visitors.
lead section / introduction
The term may have developed as a label in the 1990s.
Necessary conditions and sequence of events section, sentence listing flower species and colors
brittlebushes (Encelia farinosa; yellow flowers), California poppies (Eschscholzia californica; bright orange), desert bluebells (Phacelia campanularia; deep purple)
View the SourceEncyclopaedia Britannica
Encyclopaedia Britannica, Inc.Demonstrated By: Mojave DesertView the Source Reader Challenges (0)
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