3 minutes | Monday, 6 April 2026
On this episode of Dig It, Hester Macdonald explores the hidden world beneath our feet: soil.
Featuring insights from French biologist Marc-André Selosse, they look at the living systems that support plant growth, from microbes to roots, and why healthy soil matters for every gardener. Selosse explains what’s really happening underground and how gardeners can care for their soil more responsibly.
Hester also shares where to learn more about sustainable gardening through courses at the Swiss Gardening School.