Leaving bag soil in sun

[tqn626]

I always heard that leaving your bag soil in the sun obliterates all the microbes in that soil by cooking them. Is that true?

[kichaimsten]

I'm not one of the experts, but my conjecture is that if the bags get hot enough to dry out, they will have cooked all the good little bugs in there. There is plenty of reasons to not keep bags once they've been opened too, I would suspect.

[RayR]

If the temperature inside that bag gets to 165°F or higher....they'll be dead.

[Lee]

I would conjecture that there are few if any living microbes in these
bagged soil to begin with. (ie. meaning, when you purchase them)
I would guess the manufacture/distribution/point of sale processes
have already killed any existing microbes before you get them.
I wouldn't worry about it though, as once added to your landscape, the microbes will return.

Lee

[tqn626]

Originally Posted by Lee

I would conjecture that there are few if any living microbes in these
bagged soil to begin with. (ie. meaning, when you purchase them)
I would guess the manufacture/distribution/point of sale processes
have already killed any existing microbes before you get them.
I wouldn't worry about it though, as once added to your landscape, the microbes will return.

Lee

I'm mainly worried about Worm castings. I use it to make my compost tea. I usually buy it from a hydroponics store since I know they never leave it out in the sun, called the company too.

My nursery has worm castings for much cheaper, but it been baking in the sun all day everyday.