Trichoderma - Killing Bad Fungus with a Good One

[Undergrounder]

Having had a quick look online, it seems like Trich would grow happily on any grain, not just cornmeal. So you can probably use anything 'gluteny': brown rice flour, rye, bran, wheat meal, etc.

And as far as i can tell, you're just putting out 'mold food' into the soil, which when it becomes wet, would slowly quickly become colonised by molds of all kinds. And then if there's Trichoderma spores in there too (which there probably is), then they might germinate, eat the grains and move on to attacking the root pathogenic fungi. I think that's how the corn meal is working.

I don't see why or how it would work to kill bacterial rots, it only parasites onto fungi as far as i've read. So i don't see why it would work on leaf spots and soft rots. I might be wrong. You said that you used it in combination with H202 for bad rots as well, didn't you? I wonder whether that is doing the job, because in my experience, 3-6% H202 is great for dealing with specific bacterial and fungal infections.

Thanks for posting an interesting thread, i don't think i'll be using Trich in my orchids, as Andrew mentioned i'd be worried about killing of mycorrhizal partnerships, and i don't use a media that would work very well with it anyway. But i might use it in the soil around my roses!