Spring blooms around the world WASHINGTON D.C., March 18, 2020 . Photo taken on March 18, 2020 shows cherry blossoms at the Tidal Basin in Washington D.C., the United States. (Photo by Liu Jie/Xinhua via Getty Images) (Xinhua News Agency)
Spring blooms around the world NEW YORK, NY - MARCH 16: Cherry blossoms near the Unisphere at Flushing Meadows-Corona Park on March 16, 2020 in New York City. (Photo by Liao Pan/China News Service via Getty Images) (China News Service)
Spring blooms around the world A view of cherry blossoms is seen in Washington, DC as the coronavirus continues to spread across the United States on March 18, 2020. (Photo by Daniel SLIM / AFP) (Photo by DANIEL SLIM/AFP via Getty Images) (DANIEL SLIM)
Spring blooms around the world This picture shows cherry blossoms in the Japanese capital Tokyo on March 19, 2020. - Japan's weather agency declared the earliest start to the season since statistics began in 1953 after forecasters monitoring trees spotted the first signs of bloom, heralding a period when Tokyo's parks, temple grounds, schools and streets explode in pinks and whites. (Photo by Kazuhiro NOGI / AFP) (Photo by KAZUHIRO NOGI/AFP via Getty Images) (KAZUHIRO NOGI)
Spring blooms around the world 17 March 2020, North Rhine-Westphalia, Cologne: Daffodils bloom on the lawn in the sunshine at Rheinpark at springlike temperatures. Photo: Roberto Pfeil/dpa (Photo by Roberto Pfeil/picture alliance via Getty Images) (picture alliance)
Spring blooms around the world 17 March 2020, North Rhine-Westphalia, Cologne: Easter bells bloom in the sunshine at the Rheinpark at springlike temperatures. Photo: Roberto Pfeil/dpa (Photo by Roberto Pfeil/picture alliance via Getty Images) (picture alliance)
Spring blooms around the world 17 March 2020, North Rhine-Westphalia, Cologne: A tree blossoms in the sun at the Rheinpark at springlike temperatures. Photo: Roberto Pfeil/dpa (Photo by Roberto Pfeil/picture alliance via Getty Images) (picture alliance)
Spring blooms around the world 18 March 2020, Lower Saxony, Hanover: Passers-by enjoy the magnificent blue stars in the Georgengarten despite the corona virus. Photo: Peter Steffen/dpa (Photo by Peter Steffen/picture alliance via Getty Images) (picture alliance)
Spring blooms around the world 19 March 2020, Baden-Wuerttemberg, Königschaffhausen: A bee collects flower pollen on a plum tree. At springlike temperatures many blossoms bloom on the trees in the Kaiserstuhl. Photo: Patrick Seeger/dpa (Photo by Patrick Seeger/picture alliance via Getty Images) (picture alliance)
Spring blooms around the world 19 March 2020, Baden-Wuerttemberg, Königschaffhausen: A flower of plums is hanging from a branch. At springlike temperatures many flowers bloom on the trees in the Kaiserstuhl. Photo: Patrick Seeger/dpa (Photo by Patrick Seeger/picture alliance via Getty Images) (picture alliance)
Spring blooms around the world 19 March 2020, Saxony, Oelsnitz: Crocuses bloom on the former grounds of the State Garden Show in Oelsnitz (Erzgebirge). Photo: Peter Endig/dpa-Zentralbild/ZB (Photo by Peter Endig/picture alliance via Getty Images) (picture alliance)
Spring blooms around the world dpatop - 19 March 2020, Thuringia, Dachwig: A bee pollinates the blossoms of apricot trees of the Goldrich variety on an apricot plantation of the Bosse fruit farm in Dachwig (Gotha district). On the plantation in the Thuringian fruit-growing area "Fahner Höhe", he looks for possible frost damage on one hectare with about 900 trees. This year the blossom is more than a week too early and night frosts have been announced for the weekend. Photo: Mario Gentzel/dpa-Zentralbild/dpa (Photo by Mario Gentzel/picture alliance via Getty Images) (picture alliance)
Spring blooms around the world 19 March 2020, Bavaria, Munich: A bee collects pollen in a cherry blossom in the Olympic Park. Photo: Sven Hoppe/dpa (Photo by Sven Hoppe/picture alliance via Getty Images) (picture alliance)
Spring blooms around the world ANSHUN, CHINA - MARCH 18: Aerial view of cherry blossoms at a cherry park in Linglong Village on March 18, 2020 in Anshun, Guizhou Province of China. (Photo by Qin Gang/VCG via Getty Images) (VCG)