Historical clue formulations

• Some natural fences — 2022-07-20
• Alternative to a fence — 2020-03-12
• Bougainvillea and others — 2010-08-25
• Rosemary and sage — 2006-03-16
• They may be ornamental — 1999-07-23
• Daphne and hazel — 1994-09-09