Photo detail

Tamarisk, also known as salt cedar. (Photo/USDA)

Stories this photo appears in:

Tease photo

Restoring riparian ecosystems: Is non-native tamarisk really the enemy?

About a dozen people crouched in the tall grass of an open field, moving slowly and deliberately through mud that squished underfoot. Some carried huge, serrated knives called hori-hori, a Japanese tool made specifically for weeding.