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Mushroom grow kits are fun easy ways to learn about mushrooms and watch them grow infront of you eyes.


This kit is a large 10lb bag and should give many large harvests compared to smaller 3-5lb bags other companies offer which give much smaller harvests.

All you do is cut into the bag,  place in a tote, mist the walls of tote with spray bottle and leave the lid adjar allowing some fresh air but keeping the humidity up. Mushrooms will sprout and grow to maturity over the next weeks. You can expect 3-5 harvests over the next month or two. More in depth details below but in short it is as simple as that.

About the Bag and Substrate
The bag holds a hard wood based substrate that has been supplemented with oats and soy hulls(for extra nutrition) It is hydrated to propper levels, steam sterilized and inncolulated with the culture. The white filter patch at the top is a .5 micron filter allowing for gas exchange so the mycelium can exchange and get fresh air without the bag taking in a bunch of competitor fungal spores/bacteria, which may result in a contaminated bag.
it is delicate, if you do break the patch or rip the bag by accident just tape the tear.

Growing Instructions 
While colonising put bag somewhere at room temp, preferably somewhere dark. 
 Once bag is  fully colonized (substrate completely covered in white mycelium) cut a big X (3"x3") into middle or bottom of bag, where the substrate is tightest to bag is best,  and place into fruiting conditions (humidty dome/tent)

Fruiting Conditions
Set your humidity dome somewhere away from direct sun light, between 15C and 25C. An easy humidty dome is a plastic tote with the lid left cracked open. Mist the block and walls of your humidty dome a couple times a day. You don't want a pool of water collecting on the bottom, but you don't want the walls or bottom to be completely dry either, if they are dry, mist a little more, and don't leave lid so wide open. If it looks too wet in there try misting less and leave the lid more open.
(see links at bottom for examples)

Within 1-2 weeks baby mushrooms (pins) should form from the cut, (see problems section below for potential problems/soultions)
Once they start growing they should be ready to harvest within 1 week. Best time to harvest is before or as the caps start  inverting upwards. When the caps invert they will start dispering their spore load, which is actually really amazing to see up close so maybe you want to let it mature so you can watch it happen. 
After the 2nd or 3rd harvest you will want to rehydrate your block to get higher yield for next mushroom flushes.Some people say to soak the block in a bucket of water but, I recommend using a flavor injector syringe (can be purchased seperately with kit for $5) Just inject water everwhere into the substrate until the block feels heavy again or stops absorbing the water.

After harvesting you can make additional cuts elsewhere on bag or let them grow back where they originally grew from. I usually like to make another cut in bag on opposite side from the last cut.

Store your mushrooms in a paper bag in the fridge for up to 1-2 weeks or dehydrate for long term storage.

Finishing The Grow Kit 

After 3-5 harvests your block might start looking a little sad, green, or attract fruit flies. Put your spent block in your compost, or mix into garden soil where it can then give benefictial organics to your soil. There are so many benefits to adding this to soil, you can read more on this on the " Spent Substrate Compost Product" Page

Sometimes the mushrooms will grow  elsewhere in bag, and not from where you made your cut, that is ok, you can just cut the bag open where they decided to grow. Just catch them early so they do not get to squished against the bag.  They often will grow on their own near the top of the bag as it is closest to the filter patch and closest to the fresh air which signals them to grow.

Oyster mushrooms like lots of fresh air, so when the mushrooms are growing, take the lid off and fan fresh air in as often as you can. Oysters breath oxygen and expel co2 and it the co2 in their environment is high the oyster will develop very stemmy, which is not necesarily a bad thing. Oysters with big stems can be great to cook with if you peel the stems length wise into nice strips. 

If 1-2 weeks have passed since you cut into bag and no mushrooms have come up, you can try cutting into the bag again, either in same cut or a new cut, but cut a little deeper in substrate. 

*Mushroom video instruction links*

Another grow kit company, They have really good instructions and videos so make sure to check it this one out.

Mushroom Tent

With this monotub method you can either leave your mushroom bag in tub and fruit from the bag Or try and expand your mushroom block into more bulk substrate. This is where you break up your mushroom fruiting block into small pieces and mix it with pasteurized straw wood chips saw dust etc in hopes your block will colonize more material and give you bigger yields, def more for the advanced grower and you should learn how to just fruit your mushrooms first from bag. You could also just try using an unmodified tub, and take the lid off and fan the inside a few times a day when you re mist tub.

Another good vid for oysters

Eventually you may want to try a real legit style grow tent with actual humidifier and intake outtake air fans

Grow Kit Oyster

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