Witloof chicory — the blanched, forced endive heads — is classified under 070521. Other chicory, including radicchio and curly endive, falls under 070529. The distinction matters because the two subheadings can carry different duty rates and have different primary supply countries.

Radicchio is a Cichorium species, so it classifies as chicory, not lettuce. Depending on its specific variety and form, it would fall under 070521 (witloof) or more commonly 070529 (other chicory).