Celine Dion lists a private Canadian island for $29.3 million; Ryan Seacrest is in escrow to buy Ellen DeGeneres's home for $37 million; a midtown Manhattan duplex lists for $12 million.

Even if pushed, you don't have to share the details of your bank account or personal life.

If last year was about big, manly architectural statements at the RHS Chelsea Flower Show, this year is about exploring the softer, more sensual side of gardening, with smells and sounds featuring heavily in show spaces.