A couple of organic gardeners chat about native plants and garden wildlife. They research and summarise the subject for a particular episode - eg bees, or horse chestnut, or moor grass. They invite guests eg Dr Emma Sherlock of the Natural History Museum, who enthusiastically talks about worms in episode 24 of June 22. A gentle, informal, quite heartwarming listening experience.
It's found on any general podcast provider - just search on your own phone app. It's not produced by the BBC so won't be on Sounds. This is what came up on Google: https://thewildlifegardenpodcast.podbean.com/