A person wearing a floral headpiece poses while attending the final day of the Chelsea Flower Show, delayed from its usual spring dates because of the lockdown restrictions amid the spread of the coronavirus disease (COVID-19) pandemic in London, Britain, September 26, 2021. REUTERS/Henry Nicholls 

A visitor views a floral display while attending the final day of the Chelsea Flower Show, delayed from its usual spring dates because of the lockdown restrictions amid the spread of the coronavirus disease (COVID-19) pandemic in London, Britain, September 26, 2021. REUTERS/Henry Nicholls TPX IMAGES OF THE DAY 

Visitors attend the final day of the Chelsea Flower Show, delayed from its usual spring dates because of the lockdown restrictions amid the spread of the coronavirus disease (COVID-19) pandemic in London, Britain, September 26, 2021. REUTERS/Henry Nicholls 

Doormen wear floral themed suits as they work at Annabel's members club, decorated to coincide with the RHS Chelsea Flower Show, in London, Britain, September 24, 2021. REUTERS/Toby Melville 

A visitor attends the final day of the Chelsea Flower Show, delayed from its usual spring dates because of the lockdown restrictions amid the spread of the coronavirus disease (COVID-19) pandemic in London, Britain, September 26, 2021. REUTERS/Henry Nicholls 

Visitors attend the final day of the Chelsea Flower Show, delayed from its usual spring dates because of the lockdown restrictions amid the spread of the coronavirus disease (COVID-19) pandemic in London, Britain, September 26, 2021. REUTERS/Henry Nicholls 

Visitors wearing floral headpieces attend the final day of the Chelsea Flower Show, delayed from its usual spring dates because of the lockdown restrictions amid the spread of the coronavirus disease (COVID-19) pandemic in London, Britain, September 26, 2021. REUTERS/Henry Nicholls 

A visitor views a display made from recycled plastic bottles during the final day of the Chelsea Flower Show, delayed from its usual spring dates because of the lockdown restrictions amid the spread of the coronavirus disease (COVID-19) pandemic in London, Britain, September 26, 2021. REUTERS/Henry Nicholls 

A dried flower design depicting a human skull is displayed at the RHS Chelsea Flower Show, delayed from its usual spring dates because of lockdown restrictions amid the spread of the coronavirus disease (COVID-19) pandemic, London, Britain, September 20, 2021. REUTERS/Toby Melville TPX IMAGES OF THE DAY 

A woman wearing clothing made from dried flowers attends the RHS Chelsea Flower Show, delayed from its usual spring dates because of lockdown restrictions amid the spread of the coronavirus disease (COVID-19) pandemic, London, Britain, September 20, 2021. REUTERS/Toby Melville TPX IMAGES OF THE DAY 

A woman with a themed hat attends the RHS Chelsea Flower Show, delayed from its usual spring dates because of lockdown restrictions amid the spread of the coronavirus disease (COVID-19) pandemic, London, Britain, September 20, 2021. REUTERS/Toby Melville 

A visitor attends the Chelsea Flower Show, delayed from its usual spring dates because of lockdown restrictions amid the spread of the coronavirus disease (COVID-19) pandemic in London, Britain, September 22, 2021. REUTERS/Hannah McKay 

A visitor attends the Chelsea Flower Show, delayed from its usual spring dates because of lockdown restrictions amid the spread of the coronavirus disease (COVID-19) pandemic in London, Britain, September 22, 2021. REUTERS/Hannah McKay 

A stall worker tends to a rose garden at the Chelsea Flower Show, delayed from its usual spring dates because of lockdown restrictions amid the spread of the coronavirus disease (COVID-19) pandemic in London, Britain, September 22, 2021. REUTERS/Hannah McKay 

Visitors view the hand sculpted repurposed van "Delays Expected" by Dan Rawlings, on display at the RHS Chelsea Flower Show, delayed from its usual spring dates because of lockdown restrictions amid the spread of the coronavirus disease (COVID-19) pandemic, London, Britain, September 21, 2021. REUTERS/Toby Melville TPX IMAGES OF THE DAY 

A visitor attends the Chelsea Flower Show, delayed from its usual spring dates because of lockdown restrictions amid the spread of the coronavirus disease (COVID-19) pandemic in London, Britain, September 22, 2021. REUTERS/Hannah McKay 

Detail of a floral installation is seen at the RHS Chelsea Flower Show, delayed from its usual spring dates because of lockdown restrictions amid the spread of the coronavirus disease (COVID-19) pandemic, London, Britain, September 21, 2021. REUTERS/Toby Melville 

Visitors attend the Chelsea Flower Show, delayed from its usual spring dates because of lockdown restrictions amid the spread of the coronavirus disease (COVID-19) pandemic in London, Britain, September 22, 2021. REUTERS/Hannah McKay 

Detail of a dahlia is seen at the RHS Chelsea Flower Show, delayed from its usual spring dates because of lockdown restrictions amid the spread of the coronavirus disease (COVID-19) pandemic, London, Britain, September 20, 2021. REUTERS/Toby Melville 

A visitor takes photographs at the RHS Chelsea Flower Show, delayed from its usual spring dates because of lockdown restrictions amid the spread of the coronavirus disease (COVID-19) pandemic, London, Britain, September 21, 2021. REUTERS/Toby Melville 

Visitors view a floral display at the RHS Chelsea Flower Show, delayed from its usual spring dates because of lockdown restrictions amid the spread of the coronavirus disease (COVID-19) pandemic, in London, Britain, September 23, 2021. REUTERS/Toby Melville 

Vegetables are displayed at the RHS Chelsea Flower Show, delayed from its usual spring dates because of lockdown restrictions amid the spread of the coronavirus disease (COVID-19) pandemic, London, Britain, September 21, 2021. REUTERS/Toby Melville 

Detail is seen of a fuchsia display at the RHS Chelsea Flower Show, delayed from its usual spring dates because of lockdown restrictions amid the spread of the coronavirus disease (COVID-19) pandemic, London, Britain, September 21, 2021. REUTERS/Toby Melville 

A visitor views a display at the RHS Chelsea Flower Show, delayed from its usual spring dates because of lockdown restrictions amid the spread of the coronavirus disease (COVID-19) pandemic, London, Britain, September 21, 2021. REUTERS/Toby Melville 

A visitor points towards alliums at the RHS Chelsea Flower Show, delayed from its usual spring dates because of lockdown restrictions amid the spread of the coronavirus disease (COVID-19) pandemic, in London, Britain, September 23, 2021. REUTERS/Toby Melville 

A visitor views a floral installation at the RHS Chelsea Flower Show, delayed from its usual spring dates because of lockdown restrictions amid the spread of the coronavirus disease (COVID-19) pandemic, London, Britain, September 21, 2021. REUTERS/Toby Melville 

Detail is seen of a fuchsia display at the RHS Chelsea Flower Show, delayed from its usual spring dates because of lockdown restrictions amid the spread of the coronavirus disease (COVID-19) pandemic, London, Britain, September 21, 2021. REUTERS/Toby Melville 

A visitor views vegetable displays at the RHS Chelsea Flower Show, delayed from its usual spring dates because of lockdown restrictions amid the spread of the coronavirus disease (COVID-19) pandemic, London, Britain, September 21, 2021. REUTERS/Toby Melville 

Detail of a floral installation is seen at the RHS Chelsea Flower Show, delayed from its usual spring dates because of lockdown restrictions amid the spread of the coronavirus disease (COVID-19) pandemic, London, Britain, September 21, 2021. REUTERS/Toby Melville 

A visitor attends the RHS Chelsea Flower Show, delayed from its usual spring dates because of lockdown restrictions amid the spread of the coronavirus disease (COVID-19) pandemic, London, Britain, September 21, 2021. REUTERS/Toby Melville 

Visitors attend the RHS Chelsea Flower Show, delayed from its usual spring dates because of lockdown restrictions amid the spread of the coronavirus disease (COVID-19) pandemic, London, Britain, September 20, 2021. REUTERS/Toby Melville 

A woman with a themed hat attends the Chelsea Flower Show, delayed from its usual spring dates because of lockdown restrictions amid the spread of the coronavirus disease (COVID-19) pandemic, London, Britain, September 20, 2021. REUTERS/Toby Melville TPX IMAGES OF THE DAY 

A Chelsea Pensioner views a piece entitled "The Green Room" at the RHS Chelsea Flower Show, delayed from its usual spring dates because of lockdown restrictions amid the spread of the coronavirus disease (COVID-19) pandemic, in London, Britain, September 23, 2021. REUTERS/Toby Melville 

Visitors queue to view a floral display at the RHS Chelsea Flower Show, delayed from its usual spring dates because of lockdown restrictions amid the spread of the coronavirus disease (COVID-19) pandemic, London, Britain, September 23, 2021. REUTERS/Toby Melville 

A visitor views floral displays at the RHS Chelsea Flower Show, delayed from its usual spring dates because of lockdown restrictions amid the spread of the coronavirus disease (COVID-19) pandemic, in London, Britain, September 23, 2021. REUTERS/Toby Melville