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What's your favorite sort of system to grow in? "Organics without a doubt. I prefer peat-free compost and organic nutrients. Hydroponics is effective but cannabis is uniquely smoked and I don’t like the idea of using aggressive chemicals that may leave a residue in the plant material". MEL THOMAS. Materials used in peat-free compost Wood Most peat-free composts contain wood-based materials as their primary ingredient, e.g. woodfibre, composted bark, sawdust, wood or paper waste. Wood-based mixes can be tailored to the requirements of most plants as they have excellent drainage properties as well as a low pH. Coir Coconut fibre or ‘coir’ is mainly imported from Sri Lanka. Coir is a waste product. It has excellent natural water-holding ability and a sufficient mix of fine and coarse fibres to hold air in its pore spaces, making it a good growing medium. It does not hold nutrients well, however. The environmental credentials of coir-based products are questioned due to the distance they must be transported to the UK, but this is balanced out by the fact that it is a genuine waste material. Green Compost Many Local Authorities and private companies are collecting and composting green waste, the resultant green compost tends to have a high nutrient content and a high pH making it an excellent soil improver or mulch. There is an industry standard (British Standards Institution PAS100) for green compost that enforces consistent and regulated processing in order to encourage its use in potting composts. Due to its high pH and high levels of nutrients, green compost tends to be mixed with other materials to make potting compost – it is usually no more than 30 per cent of the overall product. Do you have any idea about how to mix? Can you see better results of yield,taste,potency? Let's chat...