I’ve enjoyed listening to these progammes which are still available for you to access. The Kew Garden series was particularly interesting because I’ve had several visits there over the years and I’m fascinated by the history surrounding the early plant collectors.
Sheila Dillon presents The Food Programme where UK commercial honey packing and food fraud is discussed. https://www.bbc.co.uk/sounds/play/b014m76w
In another Food Programme presentation, Sheila Dillon discusses urban beekeeping from around the world. https://www.bbc.co.uk/sounds/play/b04jhmhh
Commerical beekeeping in the US which includes interviews with bee farmers and two scientists, Randy Oliver and Sue Cobey. https://www.bbc.co.uk/sounds/play/b01rg226
“Bees, Seeds and Diseases” discusses pollination and the environment. https://www.bbc.co.uk/sounds/play/w3cstwvz
Here’s another excellent one on pollination. https://www.bbc.co.uk/sounds/play/b00kt8r1
Kathy Willis from Kew directs this wonderful series about plants called “Plants-From Roots to Riches”, and is available in 5 Omnibus presentations. https://www.bbc.co.uk/sounds/play/b04kfybz