Ask John Wick if the grass is truly greener on his property. It is, he’ll tell you, smiling. It’s darker, denser and better at holding the soil’s moisture, too, he’ll add. It has to be.

The greening grass on his Nicasio ranch has been the favorable outcome of a partnership with land stewardship consultant Jeff Creque and a host of others working with the Marin Carbon Project, a group that is pioneering climate change solutions…