JF's Excellent Oncidium Mix - gallon

One of the best growers of orchids I know gave me his recipe to the perfect Oncidium orchid potting mix. This is a grower who can take a standard 4" oncidium, and within a year or two turn it into an AOS award winning specimen! Believe me when I say you'd like to be an orchid under his care!

This mix is made with fine fir bark, calcium chips, coarse perlite and ground granite.   

1 gallon