Here's one he drew earlier: Hockney's giant screen break

The painting - Untitled, 382 - is going on display, for the first time in Europe, to mark the opening of Hockney’s retrospective at Tate Britain.

The 79-year-old artist said that it was “a very exciting moment to see this painting of my garden... on its biggest ever canvas”.

He said: “When I created this work I always imagined it would look rather good on a large scale, and I’m delighted that people from across the UK will see this picture come to life.

“I encourage everyone to keep calm and carry on drawing - and to come see my show at Tate Britain.”

It is hoped that the work, on show for seven days in London, Birmingham, Edinburgh, Glasgow, Leeds, Manchester and Newcastle, will be seen by 20 million people.

The largest screen, in Birmingham, is more than 100 square metres.

The screens will also show an animation of the Bradford-born artist’s brushstrokes, building up to reveal the painting as well as Hockney’s “keep calm” message.

The image is one of more than 70 iPad and iPhone works on show at Tate Britain’s new exhibition.

Hockney has painted with iPads since 2010, the year that they were introduced, and the works will be the focus of the final room of the retrospective.

Tate Britain director Alex Farquharson said: “We are so pleased to share the brilliant artistry of David Hockney with the country in such an impactful, innovative way.

“It will be fantastic to see the painting build on these huge screens. I am sure the size will amplify the nuances of Hockney’s working process. I hope that people will be inspired to try new ways of drawing and to visit the exhibition at Tate Britain to see 60 years of Hockney’s creativity first-hand.”

David Hockney opens at Tate Britain today and runs until May 29.