That is good to know because I am out of potting mix. If it worked, keep doing it. Keep using it for your non precious seeds and report. Your experience is a good lesson.
I tried cow manure and it didn't work. I have some dry barn lot "soil" and planted too many verbascum seeds. I transplanted some into this cow manure and they damped off. So now I know.
Still don't know if I can mix it with other stuff in pots and use bigger plants. I hate to spend all the money I spend on potting mix when I have a huge pile of cow manure and rotted wood that looks like peat moss.