Emily Ryan and her children carry sunflowers to leave at the school entrance in remembrance after a deadly shooting at the Covenant School in Nashville, Tennessee, U.S. March 28, 2023. REUTERS/Austin Anthony 

Emily Ryan and her children carry sunflowers to leave at the school entrance in remembrance after a deadly shooting at the Covenant School in Nashville, Tennessee, U.S. March 28, 2023. REUTERS/Austin Anthony 

Sunflowers stand dried on the side road as a plume of smoke resulting from shelling rises above the rooftops of the frontline village of Kalynivka near Chasiv Yar, amid Russia's invasion of Ukraine, in the eastern Donetsk region, Ukraine March 21, 2023. REUTERS/Violeta Santos Moura 

A detail shot of a sunflower sea star’s tube feet, seen in an enclosure at University of Wasington’s Friday Harbor Marine Lab in Friday Harbor, Washington, U.S., February 11, 2023. REUTERS/Matt Mills McKnight 

Sunflower sea stars seen in an enclosure at University of Wasington’s Friday Harbor Marine Lab in Friday Harbor, Washington, U.S., February 11, 2023. REUTERS/Matt Mills McKnight 

Sunflower sea stars seen in an enclosure at University of Wasington’s Friday Harbor Marine Lab in Friday Harbor, Washington, U.S., February 11, 2023. REUTERS/Matt Mills McKnight 

Senior Research Scientist Jason Hodin of the University of Washington’s Friday Harbor Marine Lab pauses for a portrait while looking at sunflower sea stars at the university’s field station in Friday Harbor, Washington, U.S., February 11, 2023. REUTERS/Matt Mills McKnight 

Wilted sunflowers are seen on a field, amid Russia's attack on Ukraine, near Bahmut, Donetsk region, Ukraine, February 16, 2023. REUTERS/Marko Djurica TPX IMAGES OF THE DAY 

Dried sunflowers are seen on a farm, amid Argentina's worst drought in sixty years, in Tostado, northern Santa Fe Argentina February 8, 2023. REUTERS/Miguel Lo Bianco 

Dried sunflowers are seen on a farm, amid Argentina's worst drought in sixty years, in Tostado, northern Santa Fe Argentina February 8, 2023. REUTERS/Miguel Lo Bianco 

People walk on a sunflower field in Kaohsiung, Taiwan, January 12, 2023. REUTERS/Ann Wang 

A woman reacts on a sunflower field in Kaohsiung, Taiwan, January 12, 2023. REUTERS/Ann Wang 

Snow is seen on dead sunflowers during a Russian strike while a 36-hour ceasefire over Orthodox Christmas was declared by Russian President Vladimir Putin, as Russia's attack on Ukraine continues, from the frontline Donbas city of Bakhmut, Ukraine, January 7, 2023. REUTERS/Clodagh Kilcoyne TPX IMAGES OF THE DAY 

People visit a sunflower field in Lopburi, Thailand, December 5, 2022. REUTERS/Athit Perawongmetha 

A couple takes selfies in a sunflower field in Lopburi, Thailand, December 5, 2022. REUTERS/Athit Perawongmetha 

People visit a sunflower field in Lopburi, Thailand, December 5, 2022. REUTERS/Athit Perawongmetha 

A woman takes pictures in a sunflower field in Lopburi, Thailand, December 5, 2022. REUTERS/Athit Perawongmetha 

People visit a sunflower field in Lopburi, Thailand, December 5, 2022. REUTERS/Athit Perawongmetha 

People visit a sunflower field in Lopburi, Thailand, December 5, 2022. REUTERS/Athit Perawongmetha 

People visit a sunflower field in Lopburi, Thailand, December 5, 2022. REUTERS/Athit Perawongmetha 

Dead sunflowers stand in a field near dormant oil drilling rigs which have been stacked in Dickinson, North Dakota January 21, 2016. REUTERS/Andrew Cullen 

A feminist activist places sunflowers on the site where the dead body of Ariadna Fernanda Lopez was found on the highway Mexico-Cuernavaca, in Tepoztlan, Morelos state, Mexico November 8, 2022. REUTERS/Raquel Cunha 

Feminist activists and friends of Ariadna Fernanda Lopez place sunflowers on the site where her dead body was found, on the highway Mexico-Cuernavaca, in Tepoztlan, Morelos state, Mexico November 8, 2022. REUTERS/Raquel Cunha 

Feminist activits and friends of Ariadna Fernanda Lopez place sunflowers on the site where her dead body was found on the highway Mexico-Cuernavaca, in Tepoztlan, Morelos state, Mexico November 8, 2022. REUTERS/Raquel Cunha 

A woman places sunflowers on the site where the dead body of Ariadna Fernanda Lopez was found, on the highway Mexico-Cuernavaca, in Tepoztlan, Morelos state, Mexico November 8, 2022. REUTERS/Raquel Cunha 

A feminist activist holding sunflowers hugs a woman on the site where the dead body of Ariadna Fernanda Lopez was found on the highway Mexico-Cuernavaca, in Tepoztlan, Morelos state, Mexico November 8, 2022. REUTERS/Raquel Cunha 

A sunflower blooms in a sunflower field, as Russia's invasion of Ukraine continues, in Bakhmut, Ukraine, October 28, 2022. REUTERS/Clodagh Kilcoyne TPX IMAGES OF THE DAY 

Combines harvest sunflowers in a field, amid Russia's attack on Ukraine, in Chernihiv region, Ukraine October 8, 2022. REUTERS/Viacheslav Ratynskyi 

Combines harvest sunflowers in a field, amid Russia's attack on Ukraine, in Chernihiv region, Ukraine October 8, 2022. REUTERS/Viacheslav Ratynskyi 

Combines harvest sunflowers in a field, amid Russia's attack on Ukraine, in Chernihiv region, Ukraine October 8, 2022. REUTERS/Viacheslav Ratynskyi TPX IMAGES OF THE DAY 

An agriculture worker operates a combine during sunflower harvest in a field, amid Russia's attack on Ukraine, in Chernihiv region, Ukraine October 8, 2022. REUTERS/Viacheslav Ratynskyi 

FILE PHOTO: Remains of a rocket shel is seen at a field of sunflowers, as Russia's attack on Ukraine continues, near the village of Dolyna in Kharkiv region, Ukraine September 23, 2022. REUTERS/Gleb Garanich SEARCH " UKRAINE-CRISIS/ANNIVERSARY-TIMELINE" FOR ALL IMAGES/File Photo 

Remains of a rocket shel is seen at a field of sunflowers, as Russia's attack on Ukraine continues, near the village of Dolyna in Kharkiv region, Ukraine September 23, 2022. REUTERS/Gleb Garanich 

A sunflower is pictured at a sunflower field, near the demilitarized zone separating the two Koreas in Yeoncheon, South Korea, September 22, 2022. REUTERS/Kim Hong-Ji TPX IMAGES OF THE DAY 

A bee flies over a sunflower, near the demilitarized zone separating the two Koreas in Yeoncheon, South Korea, September 22, 2022. REUTERS/Kim Hong-Ji 

A man takes photographs of his wife amid a sunflower field, near the demilitarized zone separating the two Koreas in Yeoncheon, South Korea, September 22, 2022. REUTERS/Kim Hong-Ji 

A man takes photographs of his wife amid a sunflower field, near the demilitarized zone separating the two Koreas in Yeoncheon, South Korea, September 22, 2022. REUTERS/Kim Hong-Ji 

A woman poses for photographs with a sunflower, near the demilitarized zone separating the two Koreas in Yeoncheon, South Korea, September 22, 2022. REUTERS/Kim Hong-Ji 

Kosovo artist Alkent Pozhegu works on the final touches of British singer Rita Ora portrait made with wheat, rice, sunflower seeds, corn, lentils in Tirana, Albania, September 6, 2022. REUTERS/Florion Goga TPX IMAGES OF THE DAY 

Kosovo artist Alkent Pozhegu works on the final touches of British singer Rita Ora portrait made with wheat, rice, sunflower seeds, corn, lentils in Tirana, Albania, September 6, 2022. REUTERS/Florion Goga 

Sunflowers and the headquarters of the European Central Bank (ECB) are seen as the sun sets, in Frankfurt, Germany, September 1, 2022. REUTERS/Kai Pfaffenbach 

Sunflowers and the skyline of Frankfurt with the headquarters of the European Central Bank (ECB) are seen as the sun sets, in Frankfurt, Germany, September 1, 2022. REUTERS/Kai Pfaffenbach 

Sunflowers and the skyline of Frankfurt with the headquarters of the European Central Bank (ECB) are seen as the sun sets, in Frankfurt, Germany, September 1, 2022. REUTERS/Kai Pfaffenbach 

Sunflowers are seen as the sun sets behind the skyline of Frankfurt, Germany, September 1, 2022. REUTERS/Kai Pfaffenbach TPX IMAGES OF THE DAY 

German President Frank-Walter Steinmeier speaks to the media, outside the residential building Sunflower house, called "Sonnenblumenhaus" on Mecklenburger parkway, as he attends a commemoration to mark the 30th anniversary of the racist attacks in the district Lichtenhagen of Rostock, Germany August 25, 2022. REUTERS/Annegret Hilse 

German President Frank-Walter Steinmeier, Senator for Youth, Social Affairs, Health, Schools and Sports of Rostock, Steffen Bockhahn and Mecklenburg-Western Pomerania state premier Manuela Schwesig visit the residential building Sunflower house, called "Sonnenblumenhaus" on Mecklenburger parkway, during a commemoration to mark the 30th anniversary of the racist attacks in the district Lichtenhagen of Rostock, Germany August 25, 2022. REUTERS/Annegret Hilse 

German President Frank-Walter Steinmeier, Senator for Youth, Social Affairs, Health, Schools and Sports of Rostock, Steffen Bockhahn and Mecklenburg-Western Pomerania state premier Manuela Schwesig visit the residential building Sunflower house, called "Sonnenblumenhaus" on Mecklenburger parkway, during a commemoration to mark the 30th anniversary of the racist attacks in the district Lichtenhagen of Rostock, Germany August 25, 2022. REUTERS/Annegret Hilse 

German President Frank-Walter Steinmeier visits the residential building Sunflower house, called "Sonnenblumenhaus" on Mecklenburger parkway, during a commemoration to mark the 30th anniversary of the racist attacks in the district Lichtenhagen of Rostock, Germany August 25, 2022. REUTERS/Annegret Hilse 

German President Frank-Walter Steinmeier visits the residential building Sunflower house, called "Sonnenblumenhaus" on Mecklenburger parkway, during a commemoration to mark the 30th anniversary of the racist attacks in the district Lichtenhagen of Rostock, Germany August 25, 2022. REUTERS/Annegret Hilse 

German President Frank-Walter Steinmeier, Integration Commissioner Reem Alabali-Radovan, Mecklenburg-Western Pomerania state premier Manuela Schwesig, Federal Government Commissioner for East Germany, Carsten Schneider, Senator for Youth, Social Affairs, Health, Schools and Sports of Rostock, Steffen Bockhahn and City Council President of Rostock, Regine Lueck visit the residential building Sunflower house, called "Sonnenblumenhaus" on Mecklenburger parkway, during a commemoration to mark the 30th anniversary of the racist attacks in the district Lichtenhagen of Rostock, Germany August 25, 2022. REUTERS/Annegret Hilse 

Mecklenburg-Western Pomerania state premier Manuela Schwesig places a sunflower as she visits the residential building Sunflower house, called "Sonnenblumenhaus" on Mecklenburger parkway, during a commemoration to mark the 30th anniversary of the racist attacks in the district Lichtenhagen of Rostock, Germany August 25, 2022. REUTERS/Annegret Hilse 

German President Frank-Walter Steinmeier and Mecklenburg-Western Pomerania state premier Manuela Schwesig hold sunflowers as they visit the residential building Sunflower house, called "Sonnenblumenhaus" on Mecklenburger parkway, during a commemoration to mark the 30th anniversary of the racist attacks in the district Lichtenhagen of Rostock, Germany August 25, 2022. REUTERS/Annegret Hilse 

German President Frank-Walter Steinmeier and Mecklenburg-Western Pomerania state premier Manuela Schwesig hold sunflowers as they visit the residential building Sunflower house, called "Sonnenblumenhaus" on Mecklenburger parkway, during a commemoration to mark the 30th anniversary of the racist attacks in the district Lichtenhagen of Rostock, Germany August 25, 2022. REUTERS/Annegret Hilse 

German President Frank-Walter Steinmeier, Mecklenburg-Western Pomerania state premier Manuela Schwesig and German Integration Commissioner Reem Alabali-Radovan hold sunflowers as they visit the residential building Sunflower house, called "Sonnenblumenhaus" on Mecklenburger parkway, during a commemoration to mark the 30th anniversary of the racist attacks in the district Lichtenhagen of Rostock, Germany August 25, 2022. REUTERS/Annegret Hilse 

German President Frank-Walter Steinmeier and Mecklenburg-Western Pomerania state premier Manuela Schwesig hold sunflowers as they visit the residential building Sunflower house, called "Sonnenblumenhaus" on Mecklenburger parkway, during a commemoration to mark the 30th anniversary of the racist attacks in the district Lichtenhagen of Rostock, Germany August 25, 2022. REUTERS/Annegret Hilse 

German President Frank-Walter Steinmeier visits the residential building Sunflower house, called "Sonnenblumenhaus" on Mecklenburger parkway and places a sunflower during a commemoration to mark the 30th anniversary of the racist attacks in the district Lichtenhagen of Rostock, Germany August 25, 2022. REUTERS/Annegret Hilse 

German President Frank-Walter Steinmeier and Federal Government Commissioner for East Germany, Carsten Schneider visit the residential building Sunflower house, called "Sonnenblumenhaus" on Mecklenburger parkway, during a commemoration to mark the 30th anniversary of the racist attacks in the district Lichtenhagen of Rostock, Germany August 25, 2022. REUTERS/Annegret Hilse 

People gather near the residential building Sunflower house, called "Sonnenblumenhaus" on Mecklenburger parkway for a commemoration to mark the 30th anniversary of the racist attacks in the district Lichtenhagen of Rostock, Germany August 25, 2022. REUTERS/Annegret Hilse 

A general view of the residential building Sunflower house, called "Sonnenblumenhaus" on Mecklenburger parkway in the district Lichtenhagen of Rostock, Germany August 25, 2022. REUTERS/Annegret Hilse 

A woman walks near the residential building Sunflower house, called "Sonnenblumenhaus" on Mecklenburger parkway and in the district Lichtenhagen of Rostock, Germany August 25, 2022. REUTERS/Annegret Hilse