The Queen has arrived at the Chelsea Flower Show this evening alongside other members of the Royal Family.
The royals are at the Royal Hospital Chelsea in London ahead of the official opening of the show tomorrow.
Prince Edward, Sophie Wessex, Princess Beatrice, the Duke and Duchess of Gloucester, the Duke of Kent, Prince and Princess Michael of Kent and Princess Alexandra are confirmed to be attending.
It was said that Her Majesty had been planning to attend and that a final decision would be taken on the day.
The 96-year-old monarch, who has mobility problems, arrived at the show in a buggy, opting to use the mode of transport at the event for the first time for her comfort.
She is touring around 10 gardens but this time will transported around the vast site on the vehicle.
Joe Little, of Majesty magazine, said of the development: "It's an extremely practical arrangement that will allow the Queen to take part in as many engagements as she is able to do."
The move follows in the footsteps of the Queen Mother, who toured the grounds of the Chelsea Flower Show in 2001 in what was nicknamed the Queen Mum Mobile - a bespoke golf cart painted in her light blue and gold candy-stripe racing colours.
Last week, the Palace said that the Queen was hoping to be able to visit Chelsea, and she arrived just after 5.40pm, dressed in a vibrant pink outfit, smiling as she sat in the open-sided vehicle.
Her Majesty, who confessed during an audience in February to not being able to move, is just 10 days away from the start of her high profile Jubilee celebrations.
She made a surprise appearance at the opening of the Elizabeth line last week and went to the Royal Windsor Horse Show and the Gallop Through History equestrian event this month, but missed the State Opening of Parliament.
Members of the royal family traditionally tour the gardens at Chelsea.
Among the displays will be The Queen’s Platinum Jubilee Garden, which will feature laser-cut steel silhouettes of the monarch, surrounded by 70 planted terracotta pots, representing each year of her reign.
It is covered with an assortment of native British-grown tree branches with lily of the valley, one of the Queen's favourite plants which featured in her coronation bouquet.
Another installation transports visitors to one of the Queen's favourite places, with a canopy of flowers including fresh delphiniums, emulating the colours and planting of the Scottish landscape near the royal family's Balmoral Castle estate in Aberdeenshire.
In the show's Great Pavilion, the monument is surrounded by a photography exhibition of the Queen visiting the show throughout her reign.
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The RAF Benevolent Fund Garden will hark back to the Battle of Britain in celebration of the support the charity has provided to RAF personnel, veterans and their families for over 100 years.
The royals will also be shown The Mind Garden, which provides a colourful place for people to connect and open up at the much-anticipated event.
It will later be transported to a local Mind organisation, providing eco-therapy for those with mental health problems.
The gardening extravaganza is returning to its May dates for the very first time since the pandemic.
The Queen has been the Royal Horticultural Society’s royal patron since 1952 and was a regular visitor to the garden show with her parents as a child.
She has attended more than 50 times during her 70-year reign.
The announcement of her attendance comes after the Queen has been seen out and about several times in the last two weeks - despite suffering from mobility problems.
Two weeks ago, she made an appearance at the Royal Windsor Horse Show and later attended the show's main event A Gallop Through History, which was broadcast on TV.
Meanwhile last week, she made a surprise appearance at Paddington Station to officially opening the new Elizabeth Line in London.
Her Majesty met staff key to the Crossrail project, as well as Elizabeth Line staff who will be running the railway - including apprentices, drivers, and station crew.
The Earl of Wessex was due to mark the completion of the line named in honour of Her Majesty but the monarch was aware of the engagement and decided to attend at the last minute.
However, several weeks ago, she pulled out of attending the State Opening of Parliament, and left heir Prince Charles to read the Queen's Speech for the first time.
