Brown Rice Flour Substrate
Manure Based Mushroom Growing Substrate
Rye Berry Grow Bags

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Out-Grow is the leading provider for edible mushroom cultures and prepared substrates on the internet.

My name is Mike and I am the proud owner of Out-Grow. I am a skilled technician in many fields, but this is my passion. I work extremely hard and make professional products. After being laid off from my job during the last recession, I decided to take Out-Grow on full-time. It was the best decision of my life. Now I am able to help people all over the world grow whatever they like. People just like you! That makes me feel good, to be able to help the world in this way. I have many years of experience in mycology and have formulated some of the best mushroom growing substrates available today. My prices will beat any of my competition and the the quality of my products is unsurpassed.