Los Angeles Times food writer David Karp dubbed the exotic fruit pitahaya "artichokes from Mars" in a story which drew inspiration from a UC Cooperative Extension field day held last month at the UC South Coast Research and Extension Center.

Karp described pitahaya - also known as dragon fruit - as flaming pink, spineless cactus fruits, with neon magenta flesh and a mild, sweet flavor. They have tiny, edible black seeds, similar to a kiwi's.

UC's resident pitahaya expert is Small Farm Program advisor Ramiro Lobo, based at the Cooperative Extension office in San Diego County. He has a test planting at the Research and Extension Center with 19 varieties. Because pitahaya, which grows on climbing cacti, requires less water than avocados, they may be an alternative crop for farmers faced with water shortages. The annual pitahaya field day this year was attended by 140 home gardeners and farmers who may be interested in cultivating the unusual fruit in California.

Much of the locally grown pitahaya is sold at farmers markets and some of the pitahaya found at grocery stores is imported. According to Karp's story, USDA permitted Vietnam farmers to export irradiated pitahaya fruit to the U.S. However, the fruit's short shelf life requires it be shipped by air, an expensive endeavor.

Mexico also presents competition for U.S. pitahaya growers. Currently farmers there grow 5,000 acres of pitahaya, and USDA permits exports from fruit-fly-free districts to the U.S.

"Most of the plantings (in Mexico) currently are not in such areas, but if that changes, the fruit may become as common as mangoes here," Karp wrote.