Turface-Expanded Shale-Coal Ash by Keith Kridler, Texas • June 8, 2012 • Comments Off on Turface-Expanded Shale-Coal AshClick any photo to see a larger view It all depends on your soil analysis but maybe more importantly as to what type of soil structure you have from your soil surface on down to about 24 inches or 60 CM where good daffodil roots “might” be growing… Read more →