Instead, Alan's Garden Secrets, to be broadcast on BBC2, will feature the 60-year-old presenter visiting showpiece British gardens in order to pass on "tips to viewers so they can create some of the same magic in their own gardens", he said.
Meanwhile, Monty Don, who took over from Tichmarsh as host of Gardeners' World in 2003 before stepping down 2 years ago, will also make a return, in Monty Don's Italian Gardens.
Other programmes in BBC2's new gardening series will include Life and Death in a Cottage Garden, hosted by Carol Klein, as well as The Edible Garden and River of Flowers.
According to the channel's controller Janice Hadlow: "This year we have a broad range of content to appeal to all levels of experience, from those with the greenest of fingers to fledgling gardeners."
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