Historical clue formulations

• Like spinach or chard — 2025-10-07
• Like many salads — 2023-09-01
• Like maples but not pines — 2021-11-08
• Like lettuce, spinach and kale — 2018-03-06
• Like lettuce — 2017-02-05
• Like maples but not firs — 2004-06-15
• Like lettuce or spinach — 2003-09-01
• Like some vegetables — 1996-03-11