Between the semi-transparent walls and the organic ground cover, this set had a lot of interesting challenges.  The ground ended up being the most interesting: a mix of roofing rubber, silk leaves, craft paper, raffia, floral foam, bead foam, and peat moss made for a convincing muddy mess.
The House in Hydesville
Geva Theatre Mainstage 2009
Set design: Patrick Clark
Lighting design: Matt Reinert