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Ariel Fish cuts the flower heads off her basil on Saturday morning at the Davis Community Gardens along Fifth Street in East Davis. Wayne Tilcock/Enterprise photo

Agriculture + Environment

Community gardens stretch food dollars, study finds

By Pam Kan-Rice

Community gardeners can save money by growing their own vegetables, according to a new report by a UC Cooperative Extension nutrition adviser.

“Low-income people in cities may be able to improve their nutrition by eating fresh vegetables grown in community gardens,” said Susan Algert, who works with UC Cooperative Extension in Santa Clara, San Mateo and San Francisco counties.

To better understand how community gardens affect the affordability and amount of food available, she recruited 10 gardeners in San Jose to weigh the vegetables they harvested from their community gardens during the spring and summer. The most common crops they grew were tomatoes, squash, green beans, peppers, onions, eggplants and cucumbers.

The citizen scientist gardeners harvested an average of 0.75 pounds of vegetables per square foot, which is more than the 0.60 pounds of vegetables per square foot USDA calculates as the typical harvest from conventional farming.

Algert found that community gardens produced on average 2.55 pounds of food per plant over the four months. For the season, buying the same vegetables at retail prices would have cost $435. People saved more money by growing more high-value crops such as tomatoes and peppers that grow vertically and occupy less ground space, she learned.

“We know that community gardens can be an important source of fruits and vegetables for people who don’t live near a grocery store or a farmers market,” Algert said. “This study shows that vegetables from community gardens can also be more affordable than buying from a store. That’s important to people who live on a low or fixed income.”

The amount of money people save by growing their own vegetables will vary.

“Our citizen scientists who worked on this study are all experienced gardeners,” she said, “A novice gardener would likely need training to get the same results.”

Currently, Algert is studying the amount of food grown in backyard gardens of low-income families in San Jose.

“It’s a wonderful collaboration of nutrition educators, UC Cooperative Extension small farm advisers, UC Master Gardeners, Santa Clara University and Sacred Heart/Catholic Charities,” said Algert, whose study was published this month by the Journal of Academy of Nutrition and Dietetics.

Her research team is metering water usage to include in its calculations of the cost of growing the food. The UC Master Gardeners have provided soil, raised beds, seeds and drip irrigation to families who are eligible for CalFresh assistance, formerly called food stamps.

In addition to fresh produce, gardeners get some exercise. “Gardening is an excellent form of physical activity,” Algert said.

The study “Vegetable Output and Cost Savings of Community Gardens in San Jose, California” is published in the July edition of the Journal of Academy of Nutrition and Dietetics at www.andjrnl.org.

— University of California News

Special to The Enterprise

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