Speaking of "natural" ... https://www.somervillema.gov/news/somerville-passes-first-its-kind-native-planting-ordinance
"It requires that native species constitute 100% of all new plantings in any City-owned land on the Community Path, the Green Line Extension corridor, and riverfront areas; at least 75% of new plantings in City-owned parks; and at least 50% of street trees and new plantings in bioswales, plazas, streetscapes, and other City-owned property, subject to certain exemptions. "
"It requires that native species constitute 100% of all new plantings in any City-owned land on the Community Path, the Green Line Extension corridor, and riverfront areas; at least 75% of new plantings in City-owned parks; and at least 50% of street trees and new plantings in bioswales, plazas, streetscapes, and other City-owned property, subject to certain exemptions. "