Crazy as Bat Guano: the Bizarre Story of Fertilizer

Bat guano fertilizer class
Sat, February 23, 2019, 10:30 am - 12:30 pm

A history of fertilizer, which covers, along the way, manure, the nitrogen cycle, the Green Revolution, fertilizer pollution, and alternative growing methods. FREE. No pre-registration required.

Guerneville Regional Library
14107 Armstrong Woods Rd.