A big idea for small farms: How to link agriculture, nutrition and public health

A purple daikon radish grown at Ollin Farms in Longmont, Colo., and other vegetables are prepared to be served at a meeting to discuss support for small Colorado farmers in December. (Rachel Woolf for NPR)

In a chilly storeroom piled high with fall produce, Jimena Cordero is chopping up vegetables and fanning them out onto trays.

Cordero is the farm manager at Ollin Farms, not far from Boulder, Colo. — she's put together bright pink and purple radishes, apple, fresh turnips.