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File: change-in-first-bloom_1991-2020_versus_1901-2000_2000px.png

Change in first bloom 1991-2020 versus 1901-2000

Image caption

Average first-bloom date from 1991-2020 compared to the 20th-century average (1901-2000). Pink shows places where the first bloom of lilacs and honeysuckle emerged earlier than the long-term average; green shows places where blooms were later than the long-term average. NOAA Climate.gov map, based on analysis by Mark D. Schwartz, University of Wisconsin-Milwaukee.