Historical clue formulations

• ___ choy — 2025-10-10
• ___ choy — 2025-09-30
• ___ choy — 2025-08-23
• ___ choy — 2024-04-21
• Derek ___, former president of Harvard — 2022-08-06
• ___ choy — 2022-01-25
• ___ choy — 2016-09-21
• ___ Tower Gardens, National Historic Landmark in Florida — 2016-08-20
• ___ choy — 2016-04-05
• ___ choy — 2015-11-29
• ___ choy (Chinese cabbage) — 2014-11-05
• ___ choy (Chinese cabbage) — 2012-07-24
• ___ choy (Chinese vegetable) — 2012-06-17
• ___ choy (Chinese green) — 2009-10-07
• ___ choy — 2008-09-09
• ___ choy (Chinese vegetable) — 2008-04-27
• ___ choy (Chinese green) — 2007-11-26
• ___ choy — 2006-12-31
• ___ choy — 2002-02-20
• ___ choy — 2001-07-22
• ___ choy — 2000-02-20
• _____ choy (Chinese cabbage) — 1995-12-30