Superspawning Straw

Nan's Nook : Archives : Misc Tek : Straw Tek

Posted by: Millet Nov 16 02, 02:25 AM GMT
Superspawning is a term used to describe the spawning of a small to moderate amount of substrate with colonized grain spawn, then using the colonized substrate as spawn for straw. In general, the easiest substrate to use is worm castings, but manure may be used as well.

This technique differs in many ways from grain-to-grain spawn generation. Firstly, mycelium that has been grown castings, then spawned to a bulk sub is more mature, robust if you will. If transfered when the spawn is ready, rather than waiting til its convenient, the mycelium will continue to grow at its maximum (as good as you can provide anyway) rate, thereby eliminating mycelial lag, and promoting 'mycelial momentum'. In a nutshell, superspawned mycelium is superior to colonized grain.

This may also be attributed to the fact that the mycelium had been able to develop a broader range of digestive enzymes before going to the final bulk sub. IMO this is key to getting the fastest spawn run in your final substrate. After all, with pasteurized straw weve got a little window there, and we want to take full advantage of it.

Ratios of superspawn use differ from cultivator to cultivator. I think a good rule of thumb is 3 qts of colonized grain to 7 lb castings for initial superspawn generation. After this is colonized is a 12 x 18 x 6" rubbermaid, the colonized superspawn can innoc up to 4 minibales of straw, although 2 1/2 is a more comfortable measure, and will result is a slightly faster spawn run.

What I like to do is pasteurize my straw, dump it into the fruiting tub, then use a butter knife to divide my superspawn into three equal parts in the container it colonized in. The tub is inverted, and 2/3 of the spawn is allowed to fall into the tub on top of the straw. It is crumbled with clean hands then mixed with the straw. The straw is firmly packed. The last 1/3 is then crumbled over the top of the packed substrate. The purpose of this is to colonize the top as quickly as possible, thereby sealing the substrate off from potential contams with vigorous mycelium.

Casing is done when the top is solid white, 4:1 peat to calcium carbonate, respectively. 2" of casing layer isnt too much, just be sure it is loose, and didnt get packed down at application.

Mist lightly once daily, fan twice a day for 2 minutes per session, stand back and watch the mushrooms grow.

Posted by: AMD Nov 16 02, 02:49 AM GMT
You guys will do well to listen to this guy. Hes is one of the best around.


Posted by: DirtyWOP Nov 16 02, 11:05 AM GMT
thanks dude!
I love good info
there are sparks flying all thru my head now....

Posted by: Nanook Nov 16 02, 11:19 AM GMT
Thumbs up Millet wub.gif

Good to see you aboard biggrin.gif

I have had good luck grinding worm castings with PF cakes to generate spawn. It skips the precolonization step for me:  Straw Tek Tips

I have yet to spawn straw with whole grain. But I wonder if grinding grain and castings... I may give a try some day.

Hope to see you around Millet, thanks for coming by wink.gif


Posted by: Millet Nov 16 02, 03:37 PM GMT
Thanks Nan glad to be here. I like the looks of this place, there seems to be alot of good information being exchanged, and a constant stream of new and relavent threads.

Amd thanks for the complement, I think your a hell of a grower yourself, aint everyday a fella gets a black morel pin invitro..... wink.gif


Posted by: DirtyWOP Nov 17 02, 05:14 PM GMT
" I think your a hell of a grower yourself, aint everyday a fella gets a black morel pin invitro..... "

he did?
awsome....never heard of anyone culturing morels

anyway man....I don't know a whole lot about worm castings.
How does it break up? I would imagine that using colonized manure as superspawn wouldn't go too well......and thats as far as my experience goes, so how do castings differ? Do the colonized castings crumble nicely?

ya know....grain makes good spawn because it breaks up, spreads out to innoculate from every tiny kernel. But colonized dung or straw doesn't seem like it would make good would have to rip it's more squishy than crumbly

enlighten me brother smile.gif

Posted by: AMD Nov 17 02, 06:47 PM GMT
Colonized castings will break up easily. They have a consistency of potting soil. Spawning straw with them as millet suggested will give you some kick ass yeilds. You can case as suggested or let them fruit without a casing layer.


Posted by: killdannow Nov 18 02, 12:10 AM GMT
do you have to adjust the moisture of the worm castings or do you use out of the bag? Ive used worm castings before, w/o letting them colonize. I baked them for 2 hrs at 350 like in nans straw tek tips.

Posted by: AMD Nov 18 02, 12:23 AM GMT
The way I always did it was to SLOWLY add water a little at a time until a handful gives just a drop or 2 when you squeeze it hard, then microwave for 10 minutes.

It's better to be a little too dry than too wet. Wet castings contaminate easily.


Posted by: Bob Roberts Nov 18 02, 12:34 PM GMT
The superspawning is incredible. I have done something very similar in the past after having all kinds of problems with trich on the straw and first time, bang! Heed Millets advice to all those who haven't tried it. He knows his castings.

I also hear he grows pretty good basil in his spare time. wink.gif

Posted by: Millet Nov 18 02, 03:35 PM GMT
AMD is right about moisture consistency, and adding water. Most times ive done a batch it takes 10-15 minutes of adding very little water, and mixing alot. Also ive upped my microwave time to 20 minutes, same as casing mix, and have seen no increase in contamination due to sterilization of the castings.

Ive just innoced a tub of straw with crumbled colonized mycobags, and saw similiar results in relation to colonization time and and the visual appearance of the mycelium. Just cased it yesterday, well see soon......

How do I post pics?


Posted by: ShroomVator Nov 18 02, 04:04 PM GMT
Just type what you want, then click "Browse" below the typing window and the emoticons (Post Icons); this allows you to find an image and include it in your post. Then, it will upload when you "Add Reply"


Posted by: Millet Nov 18 02, 07:25 PM GMT
Heres a nearly colonized tub of castings.

Posted by: Millet Nov 18 02, 07:26 PM GMT
A closeup.

Posted by: killdannow Nov 20 02, 09:37 PM GMT
how much are you guys sterilizing at a time in the microwave?

Posted by: ShroomZilla Nov 21 02, 01:57 AM GMT
Thank You!

That was such simple awesome tek!
My friend is just now colonizing his
first spawn bag run, 60 cc's a bag...

A few of Rye, A few of whole grain brown
rice with some verm mixed in.

Innoculated Hot from a liquid culture of shroom pieces
in a karo jar ( My blender has dissapeared! )

we are talking the same amount into 6 big bags,
as would prolly fill 60 pints if not more...

Like WOW! ohmy.gif

Been waiting a long time for this!
So excited! Thanks for the tek though.
I'd rather get my tek here than off the street biggrin.gif

Thanks again

Posted by: T Razza Nov 22 02, 07:35 PM GMT
You should really listen to MM, he's a living cultivator's bible.


Would home grown compost be about the same as worm casting in terms of ratio of inorganic to organic matter? Have you ever used phase I and phase II compost (horse manure: straw) before?

I'm glad to see you posting again...

Posted by: Fuz Nov 25 02, 12:22 AM GMT
How bout spawning the substate(castings) in a bag instead of a tub?
then mix srtraw?

Posted by: Nanook Nov 25 02, 12:51 AM GMT
Sure why not.

Posted by: Fuz Dec 08 02, 07:06 PM GMT
hey guys,
spawning worm castings with seed,wait till top layer is completely
covered to mix with straw? huh.gif

Posted by: Mycota Dec 08 02, 07:16 PM GMT
QUOTE (Fuz @ Dec 09 02, 12:06 AM GMT)
>>>hey guys, spawning worm castings with seed,wait till top layer is completely covered to mix with straw? huh.gif<<<

I'm not sure exactly what you are up to?

But, it is best to add seed/grain spawn to any bulk substrate, all at once. The spawn should be 100% colonized & the bulk substrate should be pasturized.

There is wisdom in simplicity. The fewer steps taken, the less the odds are of introducing any contaminates.

Mycota wink.gif

Posted by: AMD Dec 08 02, 08:59 PM GMT
Yes you wait until the castings are completly covered.

I believe he is talking about Millets method. In this you let the castings completely colonize and then mix with straw. The theory behind this is that straw contams easily. If you mix in a large amount of colonized castings it will colonize quickly giving contams less of a chance to take hold than if you had just spawned with a couple of quarts of grain.

The method in short is.

Colonized grain is spawned to a large amount of castings.

When they are fully colonized they are spawned to a lager amount of straw. It helps to keep back about 1/4 of the castings until everything is mixed and leveled then the reserved castings are used to cover the mixture as a further guard against contamination.

This mixture is allowed to colonize and fruit. It may also be cased if you wish.

Great yields are the rule with this method and it is basically all I ever used once I got into bulk cultivation.


Posted by: HapplyDeranged Dec 08 02, 09:19 PM GMT
sounds like a winner

Posted by: Fuz Dec 08 02, 11:07 PM GMT
Sorry I was to vague,
AMD u got it, that was just what I needed
THANX to mycota too
FUZ wink.gif

Posted by: AMD Dec 10 02, 12:49 AM GMT
Good luck. Hope you have a use for a lot of the fungi. Castings and straw won't let you down.


Posted by: Fuz Dec 10 02, 06:34 PM GMT
I think I can find a use for em biggrin.gif

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