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About Us

Mushroomsubstrate.com is a division of Out-Grow LLC. We have been making and selling some of the best mushroom substrates available for over a decade!  Mushroomsubstrate.com is dedicated to providing a much needed service of formulating and processing premade mushroom substrates for anyone who wants to get into the fun hobby of mushroom cultivation or even start your own business. We are here to help.