The unpaved sidewalks are lined with native, food-bearing trees and shrubs fed by rainwater diverted from city streets. One single block has over 100 plant species, including native goji berries, desert ironwood with edamame-like seeds and chuparosa bushes with cucumber-flavored flowers.
This urban food forest – which began almost 30 years ago – provides food for residents and roughage for livestock, and the tree canopy also provides relief to residents in the third-fastest warming city in the nation. It has made Dunbar Spring a model for other areas grappling with increased heat, drought and food insecurity caused by the climate crisis.
“We’re creating a living pantry,” said Brad Lancaster, a resident and co-founder of the Dunbar/Spring Neighborhood Foresters organization, which planted the urban food forest.
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“We can plant resilient native trees that are not dependent on imported water for irrigation,” said Lancaster, standing near a series of curb cuts that pull storm water off the street into sidewalk plantings. “Trees shade the street, reduce heat stress and provide food for our neighborhood.”
Before the pandemic, Dunbar Spring held annual community-wide milling events, in which pods harvested from the hundreds of mesquite trees in the neighborhood were ground into flour – giving them a year’s supply of flour, according to Lancaster.
The work in Dunbar Spring, along with Lancaster’s books and website, have inspired people worldwide to take up water harvesting to irrigate native food-bearing street trees. “In almost every neighborhood in Tucson, you can now find at least one property doing this,” he said.
