British-Malaysian botanist James Wong is sparking a one-man houseplant revolution. With no outside space to garden, for the last 18 months James has been focusing all his horticultural energies into many fascinating plant experiments inside his small London flat.  If you follow James on social media where he's @botanygeek, you can't fail to have seen some of the results of his efforts, from a nano pond made from a glass fruit bowl that garnered 125,000 likes to terrariums no bigger than a lightbulb. If you've ever wondered how he made a coffee table terrarium of a mini green wall in a display unit, or where he sources his tiny aquarium plants from, wonder no longer, because this week's episode has all the answers for you.  If you haven't come across James before, he's got an impressive CV that includes presenting on BBC TV's Countryfile and being an expert panellist on BBC Radio 4's Gardeners' Question Time, writing numerous books - the latest one is called How To Eat Better - and of course his column for the Observer magazine. His homepage is here if you want to find out more.  I first interviewed James last year back in On The Ledge episode 13, but when I bumped into him at the Chelsea flower show this year, he invited me to take a look at his houseplants in person so I could share all his tips and tricks with all of you. Hurrah! Oh, and I got two for the price of one, because you'll hear another voice in the interview, and that's garden designer and fellow London-based plant genius Rob Stacewicz (he's on @RS_MCIHort) . And YOU get two for the price of one, because next week's show will feature more of my chat with James, including the secrets of his nano pond and his top tips for keeping fussy houseplants happy.  Please visit janeperrone.com for the full show notes, including all the suppliers and plant names that come up in this episode.