Historical clue formulations

• Plantain lily, by another name — 2025-03-09
• Shade-tolerant perennial — 2024-03-28
• Popular leafy perennial — 2022-04-08
• Lilylike plant — 2017-08-20
• Lilylike garden plant — 2011-09-13
• Lilylike plant — 2007-05-06
• Plantain lily — 2004-01-18
• Plantain lily — 2001-08-01
• Popular landscaping plant — 1998-09-24
• Plantain lily — 1998-03-22