This group of leafy vegetables falls under the general name of chicory. Heading and non-heading types exist. The heading types may be green-leaved or red.
Some red types turn red only with the onset of cool weather.
SOIL Radicchio may be grown on a wide range of soil types. Loose fertile loams, and muck soils are best. Soils should provide good water holding capacity and good internal drainage, and a pH of 6.5 and above. Since a number of these items are harvested in the fall, soils should be chosen that allow harvest in moderately rainy conditions. Two to 3 ounces are needed per acre if transplants are used.