Brian Vagg of the Compost Academy discusses how wood chips, if properly managed, can be a cheap and reliable means for supplying the organic matter—and microbes—that most garden soils are lacking.

Tom Wessels, professor emeritus at Antioch University New England and a celebrated ecologist, author, and educator explains how gardeners can enrich their landscapes with microenvironments to hugely boost their biodiversity and resilience.

Ned Friedman, Director of Harvard’s Arnold Arboretum discusses that institution’s programs to preserve the DNA of tree species and populations threatened with extinction by climate change, helping trees flourish in an increasingly challenging environment, and how you can share in his passion for these extraordinary organisms by bonding with one tree.