Talking trees powered by AI, drought-resistant crops and sweet potatoes sprouting among flowers -- the prestigious Chelsea Flower Show is facing the future with a focus on innovation and climate-change adaptation.

Over five days starting Tuesday, more than 140,000 visitors are expected to view what the Royal Horticultural Society (RHS) bills as "the pinnacle of horticultural excellence".

There are stunning gardens, 30 competing for top awards, and more than 400 exhibitors showcasing their gardening knowledge and carefully-cultivated plants to the public and champagne-sipping VIPs.

King Charles III was to visit Monday with Queen Camilla, with an eye on the show's first ever dog garden, designed by celebrity gardener Monty Don.

The head of state was also expected to visit the Wildlife Trusts' British Rainforests garden where the main attraction is a 50-year-old fern that once thrived in the Great Park of Windsor.

The garden was "inspired by the enchanted forests of Arthurian legend" and it "rekindles the wild........

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