MGP Plus - Growth Promoter for Mushroom Substrates. MGP Increases Colonization Speed, Yields, Fruit Size & Reduces Trich - Works with Rye Berries, Millet, Dung Loving Mushrooms (50 Grams)

As far as I can tell, this is the only product of its kind. Learning how to cultivate mushrooms successfully is a huge learning curve. Contamination with Trichoderma plagued my grows. I have noticed a significant improvement in the health of my substrate and size of my fruiting bodies! When you open the package it STINKS! It took me by surprise, I’ve never smelled something like it before. My first order I let the packet sit in a drawer and I noticed the smell went away. Which I don’t think was a good thing, my second order is stashed in the fridge and seems to be retaining its properties. It’s worth the price and the product is very effective!

I have been growing and selling gourmet mushrooms for years. I’ve even tried my hand at growing them in monotubs as well as my fruiting tents. All I can say is that ever since I switched from pasteurized substrate to sterilizing my substrate, my yields have increased and my contamination rates are so much lower.I am so impressed with this product that not only do I recommend it, I hope to sell it on my online store (coming soon).

Thank you Dr.Myco! This stuff is great

Definitely works easy to use and if u have troubles with directions go right to their website or scan the qr code and they have detailed instructions on how to use all their products in detail. Only thing is the bag is very small compared to the gypsum but ive bought mine about a year ago maybe more and still have more u dont have to use alot so a little goes a long way!

This killed all of my mycelium and replaced it with the worst Trichoderma SP I’ve ever encountered. I had to take everything out of my lab, completely sterilize everything and start from new. I lost everything. This happened in a controlled, sterilized lab under completely sterile conditions. This was so badly infected with bad mold spores, I even replaced all my air filters and laminar flow hood filter just to be sure. I ended up spending hundreds of dollars to clean up the damage this garbage caused. DO NOT USE THIS, it’s a scam.

I gave 4 stars because this product eliminates trich. Now I really never got trich but with mutations they can take up to 60 days maybe more. This is the reason I decided to use the No Trich product. Now as far as max yields I myself do not see a difference. If you have mold problems I would try this.

There is a huge difference with this product I highly recommend. Super fast colonization!

I had a pretty bad trichoderma outbreak in my grow space awhile back, and despite multiple deep cleanings, meticulous procedures and running a HEPA filter 24/7, each subsequent grow resulted in a mean green outbreak right around the first flush, crushing yields. I know what I'm doing, and I've been doing it for decades: I culture on agar, my rye grain spawn is super robust, substrates pasteurized per Stamets and spawned 1:3 grain/substrate, no casing - this had been working for years and then all of a sudden it wasn't. I tried autoclaving the substrate and then introducing b. subtilis (a known trich-suppressing microbe) during spawning, but kept getting hit. I was desperate.Got both MGP and Just the Trich, thinking I'd try MGP first and then move on to JTT if that didn't work (the maker says JTT will reduce yields). Followed the MGP instructions to the letter - less is more - and was blown away both by the substrate colonization time (4 days from spawn to ready-for-fruiting), voluminous and even pin set and absolutely no sign of the mean green. I've gone five flushes before the substrate putters out.So thanks, Dr. Myc. I don't know what's in this secret formula exactly; I suspect (based on the scent and the colour of the powder) it's a mix of b. subtilis and some other beneficial bacteria along with a surfactant, but if I purchased those components separately and combined them myself (I priced out this option, BTW) it would still be about the same cost, so why bother? The smallest package will last for a year at least, and it's money well-spent, as it solves two of the most persistent bugaboos of home cultivation: slow, uneven colonization/pinning and trichoderma outbreaks. Essential.