NPS photo.
Removing exotic species from the wash.
At the turn of the 19th century when irrigation became a reality in this part of the Navajo Nation, larger plots of land were cultivated. John Lorenzo Hubbell cleared over a hundred acres of his land and grew alfalfa, further reducing native vegetation at this site. During the late 1950s Hubbell's agricultural fields were no longer cultivated and native as well as non-native plant species once again took over the cultural landscape. In addition, many native animal populations returned to the site.
After the National Park Service fenced out livestock, the native plants and animals are becoming more abundant. The National Park Service has, in recent years, actively removed non-native tamarisk and Russian olive from the Pueblo Colorado Wash and planted native willows and cottonwood trees. With the reintroduction of agriculture in the once dormant alfalfa fields, the Hubbell ranch is once again alive with crops.