The TV presenter has aired his frustration over the sporting schedule clash.
Charles will speak about the measures gardeners should take to ensure pests and diseases are kept at bay.
Charles will be interviewed at Highgrove about threats to plants and trees.
The Queen will share her tribute as the show visits the historic royal retreat of Frogmore House and Gardens.
Kathy Clugston will join the long-running Radio 4 programme in May.
Letters to the Editor
ONE great solution for the Maze is to build a 'peace garden'. the garden
She will replace Eric Robson on the BBC Radio 4 show.
IT’S been a bad year for me tomato-wise and I suspect I’m not entirely alone in this regard.
TICKETS are selling fast for BBC Radio 4's Gardeners' Question Time (GQT) as it comes to the shores of Strangford Lough on Saturday June 9.
The newsreader was unveiled as the replacement for Eric Robson following his retirement from the Radio 4 programme.