1KG Sterilised Coir Substrate Bag

Coco Coir burnt alive with boiling water until it’s pasturised, bagged and then sterilised for 90 minutes at 15psi giving you the perfect coconut nutritional substrate for your spawn.

Note if you buy a 1KG Rye Spawn bag, you will need 2 of these as they should be mixed in a 1:2 ratio of 1 part spawn to 2 parts substrate.