Historical clue formulations

• Radish lookalike — 2021-10-19
• A rutabaga is a cross between a cabbage and this — 2018-03-30
• ___ greens — 2014-07-30
• Rutabaga, e.g. — 2003-03-12
• Kind of greens — 1996-08-09
• Rutabaga — 1996-07-03
• _____ greens — 1994-03-31