Can volunteers improve this freeway wall with a corridor of native plants? September 27, 2023 Home Explore The Naturalist's Journal Can volunteers improve this freeway wall with a corridor of native plants? Share FacebookTwitterEmail Seven years ago, a Girl Scout set up four planters between the sidewalk and the street along Ave. 20 from Broadway to Albion on the freeway side. California buckwheat and autumn sage now grow there, and they make things better.