Having a tiny garden is no excuse...

My guest today creates gold award winning gardens out of patches of bare land no bigger than my radio studio - which must be about 15 square metres, if that! He's currently working on building two of the big-name gardens at Chelsea - the one for the Royal Bank of Canada, and another for Melbourne's Botanic Gardens.

He's Mark Gregory, who has built more gardens at Chelsea than anyone else alive. What's more he's now a regular Gold award winner.

It'll be great to see how he does, because we're coming live from the Chelsea Flower Show on May 23rd, here on BBC Radio Berkshire. I am SO looking forward to that! For any gardener, even a fair weather amateur like me, Chelsea is an absolute delight and a HUGE inspiration.