OFE International, Miami Premium Coco Orchid Mix No. 1 Premium Orchid Planting Mix Composition: Coconut Chips, Charcoal, Sponge Rock New Medium: Coconut chips are a very popular alternative to Fir Bark. Coco Mix No. 1 is a lighter mixture of Coconut Chips,Charcoal, and Sponge Rock. A more water retentive Coconut Mixture. Ideal for dryer conditions.