King of contemporary gardens Diarmuid Gavin plans to ditch his modern approach at Chelsea in May .
The former Home Front presenter has vowed to let go of his architectural style of planting when he creates the Harrods British Eccentrics Garden.
A spokeswoman said: “Diarmuid is waving goodbye to his usual pared-back colour palette of greens and russet tones.
“He has chosen to tell a story; a pastiche of a quintessential British garden from days gone by, inspired by Heath Robinson.”
The main trees will be Carpinus betulus. Conical and dome-shaped bay trees sourced from Belgium will “twirl and bob as if performing their own symphony.”
Instead of Diarmuid’s trademark steel and glass gardens, flowering plants, ferns, grasses and shrubs are being grown by nurseries in the UK and Italy – including Hardy’s Cottage Garden Plants, Crug Farm, British Wildflowers and Valfredda.