It's a mixture of Pine, Fir, Cedar and Cypress. The bark is stripped off the trees, and it's composted for a short period of time. They use a water-based, non-toxic dye to make it look pretty in your yard. It's availabe in black or red, I've been using Sierra Red.
This is a wonderful product, here are some advantages:
-The price is right! I got a 45 lb bag for $5.00 (2 cubic feet)
-Scotts is available all over the U.S., so it's easy to obtain.
-The wood is very soft, so it colonizes much faster then hardwoods. With a few handfulls of spwan the tub colonized in 20 days. Hardwoods would have taken twice as long.
-It's very clean. I used it right out of the bag, without pasteurization. I simply added water and Friscosa spawn. There has been no sign of mold or contamination in any of my four tubs.
I'll post more pics as this project evolves, but definitely give this product a try!
I layed down a 2 inch layer of Nature Scapes first, and a few handfulls of spawn. I covered the spawn with another two inch layer of Nature Scapes.
20 days later... happy mycelium :D
Edited by waylitjim, 16 October 2011 - 12:41 PM.