Historical clue formulations

• Some showy blossoms, informally — 2018-06-04
• Alternatives to mums — 2017-11-13
• Sword lilies, for short — 2011-04-10
• Sword lilies, for short — 2005-05-29
• Sword lilies, for short — 1998-02-26
• Certain garden flowers, for short — 1996-07-05