Historical clue formulations

• Stuff growing on a tree trunk — 2026-09-08
• Carpet on the forest floor — 2026-06-28
• "Carpet" on a forest floor — 2026-03-23
• Deep shade of green — 2025-12-04
• Growth on one side of trees — 2025-11-26
• Kind of floor covering — 2025-11-07
• Plant often confused with algae — 2025-10-17
• Fuzzy green stuff on some trees — 2025-06-23
• Something furry on a fir — 2024-03-24
• First plant on Earth, it's thought — 2023-09-24
• What might surround a trunk — 2023-01-07
• Carpet on a forest floor — 2022-06-06
• Much of Iceland's greenery — 2022-03-05
• Soft "seat" in the woods — 2021-03-10
• Spanish ___ — 2020-11-20
• Terrarium growth — 2020-11-12
• Spongy growth — 2020-10-14
• Something soft to sit on — 2020-09-23
• Bryophytic growth — 2019-05-18
• Shade of green — 2018-12-16
• Some greenery that's not grass — 2018-03-11
• Actress Elisabeth who's been on the cover of Rolling Stone, ironically — 2018-02-08
• Velvety growth — 2018-02-01
• What rolling stones don't gather — 2017-07-17
• Shaded growth — 2017-05-28
• Rolling stones lack it — 2016-11-01
• Growth on the forest floor — 2016-10-11
• Spanish ___ — 2016-03-23
• Shade similar to artichoke green — 2015-09-11
• Cushiony ground cover — 2015-08-25
• Swamp stuff — 2014-10-21
• Tree-hugger? — 2013-08-10
• Moor growth — 2012-08-22
• Nature's pillow? — 2012-04-29
• Shade of green — 2011-02-17
• Peat source — 2010-08-09
• Shade of green — 2010-02-28
• Cushiony forest seat — 2006-09-06
• Forest growth — 2004-12-28
• Trunk growth — 2004-03-23
• Trunk growth — 2003-11-12
• Velvety growth — 2001-12-12
• Trunk growth — 2001-11-14
• Forest growth — 2001-09-19
• Shaded growth — 2001-02-07
• It reproduces by spores — 2001-01-21
• Tree growth — 2000-07-20
• Tree-hugger? — 1999-10-28
• Playwright Hart — 1999-09-27
• Symbol of inactivity — 1999-01-14