hail all-knowing tokers

I have this issue.

I grow in 3 parts coco to 1 part worm castings.

I sprouted a few seeds to a new strain while awaiting my coco to arrive via the mail.

(I ran out)

My coco was supposed to arrive saturday...but I guess it got delayed from all the easter mail.

All I have are worm castings right now.

My seeds have germinated to the point if I don't plant them, they will die.

Can I plant them directly into the worm castings (and nothing else) for right now?

I don't have anything else but miracle grow garden soil that i purchased for my legit vegetable garden.

why stress over the little things. just go down get sum cheap fert free soil or get some good dirt and fill a cup till you good shit get in..

thanks, I actually had some beansprouts growing in starter pods, I just yanked out the beans and planted my mj in thier place.