The show has seen several episodes moved or cancelled because of sport this season but will extend at the end of its annual run, ahead of turning 50 in 2017.
Executive producer Paolo Proto said: "It’s an exciting time and one that offers a great opportunity to expand the breadth of gardening we cover. We are going to introduce a range of new strands with some new faces to sit alongside the familiar faces of Monty, Joe, Carol and Rachel.
"These strands will cover topics as diverse as tropical plants to city gardens and inspirational garden designers to the science of gardening. We’ll spend time with head gardeners from some of the countries leading gardens and meet passionate amateurs.
"Here’s just some of the strands viewers can look forward to over the eight hour-long episodes: Nick Bailey will solve gardening problems as the garden doctor. Francis Tophill will meet gardeners who garden in extreme conditions; Nick Macer will look at tropical plants; and Florence Headlam will cover city gardens. We are going to follow garden designer Adam Frost as he moves into a new house and sets about redesigning the garden and Joe Swift will try to rekindle the nation’s long-lost love for rockeries. Carol will look at plant families and of course we will be spending time with Monty, his dogs Nigel and Nellie at Longmeadow every week.
"Alongside the regular faces we’ll see items from Nick Bailey, Florence Headlam, Nick Macer, Jane Moore, Alan Power, Zephania Lindo and Francis Tophill who will offer inspiration and practical tips from gardens and gardeners the length and breadth of the country.
"Next year Gardeners’ World will celebrate its 50th anniversary and plans are being made to ensure it's an unforgettable year for gardeners and our legion of loyal viewers."
Gardeners’ World has also made a film with Adam Frost at Barnsdale to mark the 20th anniversary of Geoff Hamilton's death, to be screened in a few weeks time.
See more in the next issue of HW.