RHS Chelsea 2021

The RHS Chelsea Flower Show 2021 in numbers

Discover the incredible work behind the scenes at the RHS Chelsea Flower Show with this fun round up of facts and figures for 2021

Chelsea Flower Show 2021 marks the 108th year that the famous flower show has been running. Here are some key numbers behind the world’s most famous flower show.


Key figures: Chelsea in numbers

It takes around 15 months to plan and around 8000 people to pull the show together – involved with building, catering and much more.

It takes a total of 25 days to build the show from scratch to the finished article.

But just 11 days to dismantle the entire show.

Chelsea 2021

The winning Houseplant Studio at the show this year: 'Celebrate Autumn with Houseplants'
The winning Houseplant Studio at the show this year: ‘Celebrate Autumn with Houseplants’

This year up to 142,000 visitors are expected to attend instead of the average number of 168,000 – this is due to reduced numbers as a result of the pandemic.

The show will run for 6 days instead of the usual 5 days this year to allow for social distancing

New categories for 2021 include:

5 Balcony Gardens

5 Houseplant Gardens

6 Houseplant Studios

The Gardens

Trailfinders' 50th Anniversary Show Garden
Trailfinders’ 50th Anniversary Show Garden

Show Gardens: 6 gardens 

Average number of plants: 4,370

Artisan Gardens: 2 gardens 

Average number of plants: 3000

Sanctuary Gardens: 6 gardens

Average number of plants: 1,260

Balcony Gardens (unjudged) 5 gardens 

Average number of plants: 160

Balcony Garden: 'Sky Sanctuary'
Balcony Garden: ‘Sky Sanctuary’

Container Gardens (unjudged) 5 gardens 

Average number of plants: 570

Container Garden: 'Tranquil Space in the City'
Container Garden: ‘Tranquil Space in the City’

RHS Feature Gardens (unjudged) 3 gardens 

Total of 27 gardens

There will be 350 horticultural exhibits from across the globe at the 11 acre site. These include:

Over 80 exhibits will feature at the Great Pavilion, including a new floristry competition and Discovery zone

A total of 14 Judges, 2 moderators and 2 skilled panel secretaries plus 4 trainee judges 25 hours to judge and assess all the gardens at the show

The Great Pavilion

The Great Pavilion

Judging – 4 Moderators, 42 Judges, 8 skilled panel secretaries, 4 trainee judges and 2 observers 6 hours to juge and assess all the exhibitions in the Great Pavilion.

The Great Pavilion measures a total of 12,000m2, which is almost 3 acres and the average size of 3,230 British gardens.

The largest exhibit at the Great Pavilion this year is Bowdens Nursery, measuring 30m2.

In 2021, 18 new plants are being launched and entered into the RHS Chelsea Plant of the Year competition.

Vegetable stand


It takes over 2000 plus staffing hours to deliver the catering during show week, which includes:

23,145 pints of Pimms

9,051 glasses for Fortnum & Mason champagne

13,828 cups of tea

28,500 cups of coffee


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