A woman photographs Cherry Blossom trees in Battersea Park in London, Britain March 23, 2021.

People enjoy the warm weather and blooming cherry blossoms as they walk by the Tidal Basin in Washington, U.S. March 27, 2021.

A parakeet eats a cherry blossom in St. James's Park, London, Britain, March 19, 2021.

Visitors ride boats next to blooming cherry blossoms at Chidorigafuchi Park in Tokyo, Japan, March 27, 2021.

Visitors ride a boat next to blooming cherry blossoms at Chidorigafuchi Park in Tokyo, Japan, March 27, 2021.

A woman walks with her bicycle under blooming cherry blossom trees by the Tidal Basin in Washington, U.S. March 27, 2021.

Margarita Pineda throws flower petals over Amancio Pineda while taking a selfie at the Tidal Basin near the National Mall in Washington, U.S., March 31, 2021.

Visitors look at cherry blossom trees at Descanso Gardens in La Canada Flintridge, California, U.S., April 7, 2021.

People take pictures of a tree that stands in full blossom outside the Forbidden City following an outbreak of the coronavirus disease (COVID-19) in Beijing, China, April 14, 2021.

People walk below blooming trees at the Cherry Alley of Bispebjerg Cemetery amid the coronavirus disease (COVID-19) outbreak in Copenhagen, Denmark April 20, 2021. Mads Claus Rasmussen/Ritzau Scanpix/via REUTERS

A man wearing a protective face mask takes a photo among blooming cherry blossoms amid the coronavirus disease (COVID-19) pandemic, in Tokyo, Japan, March 23, 2021.

Children pose for a photo by cherry blossom trees at Descanso Gardens in La Canada Flintridge, California, U.S., April 7, 2021.

Women take photos amid blooming trees during cherry blossom season in Yuyuantan Park in Beijing, China, March 31, 2021.

Kimono-clad women from Thailand take selfies among blooming cherry blossoms at Ueno Park in Tokyo, Japan, March 27, 2021.

People observe the annual cherry blossoms in Washington, U.S., March 29, 2021.

People play Chinese chess at a park under a cherry blossom trees near Bulgwangcheon Stream, in Seoul,A South Korea, April 1, 2021.

A woman wears a face mask as he walks under cherry trees in full blossom in Heerstrasse (army street), the world-wide known Cherry Blossom Avenue, amid the spread of the coronavirus disease (COVID-19) in Bonn, Germany April 15, 2021.

A squirrel crosses the Cherry Alley at Bispebjerg Cemetery amid the coronavirus disease (COVID-19) outbreak in Copenhagen, Denmark April 20, 2021. Mads Claus Rasmussen/Ritzau Scanpix/via REUTERS

A woman photographs cherry blossom trees at the Oriental Park of Maulevrier, France, March 24, 2021.

Visitors wearing protective face masks amid the coronavirus disease (COVID-19) pandemic, walk underneath blooming cherry blossoms at Ueno Park in Tokyo, Japan, March 27, 2021.

A woman enjoys the warm weather and blooming cherry blossoms by the Tidal Basin in Washington, U.S. March 27, 2021.

A woman photographs Cherry Blossom trees in Battersea Park in London, Britain March 23, 2021.

A person runs through the annual cherry blossoms in Washington, U.S., March 29, 2021.

A cherry blossom trees street is cordoned off as part of efforts to avoid the spread of the coronavirus disease (COVID-19), in Seoul, South Korea, April 1, 2021.

A visitor takes a cell phone photo of a distinguished cherry tree at the Tidal Basin near the National Mall in Washington, U.S., March 31, 2021.

A man looks at cherry blossom trees at the Oriental Park of Maulevrier, France, March 24, 2021.

People walk under Cherry Blossom trees in Battersea Park in London, Britain March 23, 2021.

Paco Lane paints blooming cherry blossoms by the Tidal Basin in Washington, U.S. March 27, 2021.

A couple kisses for a camera as people observe the annual cherry blossoms in Washington, U.S., March 29, 2021.

People take a photo next to a blooming tree during cherry blossom season in Yuyuantan Park in Beijing, China, March 31, 2021.

Priyanka Kaswan poses for a photo while sitting on a cherry tree at the Tidal Basin near the National Mall in Washington, U.S., March 31, 2021.

Jomer Gutierrez takes a selfie beside his dog, Mimi, beside cherry blossoms near the National Mall in Washington, U.S., March 31, 2021.

People walk near a cherry blossom street, closed to avoid the spread of the coronavirus disease (COVID-19), in Seoul, South Korea, April 1, 2021.

The Cherry Alley blooms at Bispebjerg Cemetery amid the coronavirus disease (COVID-19) outbreak in Copenhagen, Denmark April 20, 2021. Mads Claus Rasmussen/Ritzau Scanpix/via REUTERS

Wild bluebells, which bloom around mid-April turning the forest floor blue, form a carpet in the Hallerbos, also known as the 'Blue Forest', near Halle, Belgium April 20, 2021.

The Martin Luther King, Jr. Memorial is surrounded by blooming cherry blossoms at the Tidal Basin in Washington, U.S. March 27, 2021.

A cherry blossom trees street is cordoned off as part of efforts to avoid the spread of the coronavirus disease (COVID-19), in Seoul, South Korea, April 1, 2021.

People sit together under a blossoming tree in St James's Park, amid the coronavirus disease (COVID-19) outbreak, in London, Britain, April 1, 2021.