Why are there big rocks on this roof? [more inside]
posted by Tube on Jun 28, 2009 - 9 answers

Plant-filter: which plants/mosses for an office terrarium if the office has no windows and only florescent lighting? (something like this?) [more inside]
posted by unclezeb on Nov 19, 2008 - 9 answers

Lawn alternatives! Has anyone here tried replacing their high-maintenance grass lawn with an alternative lawn? I've read about some of the no-mow lawn grass types, and I understand other people simply let the moss and clover grow. Have you seen a lawn like this? How did you like it? [more inside]
posted by agropyron on Aug 7, 2006 - 28 answers

I was up on my roof earlier today and saw that it's covered with lichen, and there's moss growing underneath and lifting up the asphalt shingles. I there any kind of moss-or-fungicide I can spray or paint onto this stuff to get rid of it? (A trip to Loews turned up nothing.)
posted by Faze on Aug 1, 2004 - 6 answers