How much grain spawn do i need?

Go for a 10-20% ratio, ie. If you are making a 25 lb log, use 2.5-5 lbs of spawn. This is probably higher than required, but helps increase your chances of success.

The more spawn used the faster the bulk substrate will colonize. Recommended spawn ratios are usually No less than 20% (1 part spawn to 4 parts substrate).

When filling your bags or jars, only fill them Up to ¾ of the way full. Place the grain bags or quart jars in your pressure cooker to sterilize based on the method used (bag or jar) and the size of the bag. The recommended pressure is 15 PSI.

The amount of bulk substrate and spawn you will need will be dependent upon the size of your tub, but generally, One three-pound bag of spawn can be expected to colonize one or two monotubs, when combined with ten pounds of sterilized substrate.

You want to have your jars 2/3’s-3/4’s full when fully sterilized So just use a quart jar and measure out 1 quart of dry grain for every 3 quarts of desired spawn.

In summary, under a given set of conditions, Length of spawn growth can affect both yield and pattern of yield. In general, a shorter spawn-growing period means fewer pounds per ft2 in early breaks, consisting of fewer mushrooms of larger size. However, total yield can be generally reduced.

After a couple weeks or so you should start to see mycelium growing on the grain. You’ll notice the white mycelium growing outward from the injection point. When it has grown three to four inches You should, without opening the bag, carefully break up the colonized grain and mix it into the uncolonized grain.

Feel free to expand your spawn twice (which means it can become 100 times Bigger than it was to start with!), but use caution when expanding beyond that or your mycelium may show loss of vigor.

You may not see any progress right away but within 7-10 days you should see new growth all over the bag. This will continue until the bag is 100% colonized! ⇒ Complete colonization may take 30-45 days Depending on the species and what temperature you incubate at.

Mycelium grew best during spawn-running when the temperature was kept at 75° F. (23·9° C.) During pre-cropping a temperature of 65° F.

Usage of a substrate that is too wet or too dry is a common mistake. It should be Damp but not wet, with a gentle squeeze enough to release a few drops of excess water.

Usage of a substrate that is too wet or too dry is a common mistake. It should be Damp but not wet, with a gentle squeeze enough to release a few drops of excess water.

Jars hold less spawn overall And they weigh about 9 lbs. Jars are much more fragile and require extra care when shipping. At about 12 lbs, the bags hold more spawn and have an airflow patch that filters down to 0.3 microns. Please note that Grain Spawn bags are only one-time use.

Grain Spawn should arrive double bagged. Remove the outer bag upon receiving. Keep spawn at room temperature if you will be using it in the next few days. For longer storage, refrigerate the spawn for Up to 3 months.

The light is not necessary. Mycelium grows well in dark conditions. In commercial growing it is due to the cost cut. The light is mandatory for primordium formation and fruit boddies development.

Once inoculated, the mycelium takes Upwards of 10 days To jump off the spawn into the substrate.

A good substrate is dense in woody, fibrous materials like Lignin, cellulose and hemicellulose. (These contain a lot of carbon, which is the main food source for your mycelium.)

Mushrooms need a humid environment when they’re fruiting. After all, they’re made of more than 90% water. Increasing humidity Can help your mushrooms grow faster and of a better quality. Although it’s a balancing act, as too much humidity increases risk of bacterial infection and mold as well.

No – unfortunately, Reusing mushroom substrate forever is not an option. The organic materials will eventually break down to a point where they will become unusable for a new flush of mushrooms. There simply won’t be enough nutrients or energy for the mycelium to absorb.

They key is the oxygen. Molds and bacterias that break down the grain and cause contaminates need air to live. Without it they will not grow. When you remove the bags of grain from their packaging, unroll them and expose the filter patch, the bag will begin to let in outside air and breath through this filter.

Depending on the species of mushrooms, it can take about 1-3 weeks Before the jar is fully colonized. At this time you can either add it to a bulk substrate or do a grain to grain transfer to make even more spawn!

Rest jars, shake & Wait

The grain spawn should be ready for use within 14 – 21 days.

Substrate Types: Lions Mane grows best on Supplemented hardwood sawdust. Supplement with wheat bran at 10-20%. Higher spawn rates are effective with Lions Mane, increasing the chances that full colonization will take place. Lion’s Mane will also grow well on the “master’s mix”.

Substrate Types: Lions Mane grows best on Supplemented hardwood sawdust. Supplement with wheat bran at 10-20%. Higher spawn rates are effective with Lions Mane, increasing the chances that full colonization will take place. Lion’s Mane will also grow well on the “master’s mix”.

Use 2 to 10 % (of target substrate mass) of grain spawn for inoculation of wood substrate. Add about 50 – 250 g of grain spawn per bag containing 2,5 kg of wood substrate. Close the inoculated substrate bag using a bag sealer or strong adhesive tape.

The Coco Coir Vermiculite & Gypsum bulk mushroom substrate (CVG) are great for a wide variety of mushrooms. Perfect for Monotubs as bulk substrate or used as a casing layer to protect your grain spawn. Our bulk mushroom substrate bags are large 2kg bags (4.4lb). Containing Coco Coir, Vermiculite & Gypsum .